Kudos. Attach img/gif. I was looking for a site that has a list of the questions separately and that’s what I found here. I have some fragmented knowledge about arrays, stacks, queues, linked lists, very clueless about trees and I also know my way around a couple searching/sorting algorithms, but I really need to fill in the gaps. I will begin by giving a brief introduction about myself. An awesome list of everything that exists in Computer Science and Related fields. 500-datastructures-and-algorithms. 1000. Thank you and your team for helping me in my preparation. The test lasts 90 minutes, using a laptop with an IDE. Unfortunately I can't do LeetCode style questions and this is probably because I've forgotten a great deal of what was taught to me in my data structures and algorithms classes. If we solve each and every question, then you can crack any coding interview 1000% sure. The interviews for technical roles in some of the tech giants like Google, Facebook, Amazon, Flipkart is more focused on measuring the knowledge of Data Structures and Algorithms of the candidates. Based on the authors’ market leading data structures books in Java and C++, this textbook offers a comprehensive, definitive introduction to data structures in Python by respected authors. Tech. Definitely using this to study/learn. Helped me landed a job at Google as a SWE. Examples include Quora co-founder and ex-Facebook CTO ... Before you got a feeling of accomplishment every time you solved a problem or understood a new algorithm/data structure. 12 weeks. Coding Ninjas is a one stop destination for understanding data structures and building algorithms from scratch.With great quality online content and video support, difficult topics are presented in a simplified manner. Tags algorithm algorithms computer_sciences interview. Today I will write about some tips, tricks and hacks I have found from my experience in attempting recruitment tests, interviews. Courses. I have been using your website for quite a while and I find it to be absolutely great in DS and Algo preparation for technical interviews. I’ve given technical tests to people in interviews before, and the problem has always been the same one, with a bit of tweaking here and there. For sorting 900 megabytes of data using only 100 megabytes of RAM: Read 100 MB of the data in main memory and sort by some conventional method, like quicksort. Indexing and Search algorithms 3. Find maximum absolute difference between sum of two non-overlapping sub-arrays. Can anyone please share a list of DS&A in the order of increasing difficulty that in your opinion every college student must know before their interview. Arrays 4. $('#content').show(); It happens to everyone. Save it in Journal. Keep it up. I would definitely recommend this course to anyone who wants to learn Data Structures and Algorithms. I was surprised how thorough it is described, with a naive solution, a better solution using sorting, a better solution still using hashing, a finally a link to a page describing finding such pairs in a binary tree. Notify of new replies to this comment - (on), Notify of new replies to this comment - (off), Check if subarray with 0 sum is exists or not, Find a duplicate element in a limited range array, Find maximum length sub-array having given sum, Find maximum length sub-array having equal number of 0’s and 1’s, Find maximum product of two integers in an array, Sort an array containing 0’s, 1’s and 2’s (Dutch National Flag Problem), Merge two arrays by satisfying given constraints, Find index of 0 to replace to get maximum length sequence of continuous ones, Shuffle a given array of elements (Fisher–Yates shuffle), Rearrange the array with alternate high and low elements, Find largest sub-array formed by consecutive integers, Find majority element (Boyer–Moore Majority Vote Algorithm), Move all zeros present in the array to the end, Replace each element of array with product of every other element without using / operator, Find Longest Bitonic Subarray in an array, Find maximum difference between two elements in the array by satisfying given constraints, Maximum Sum Subarray Problem (Kadane’s Algorithm), Print continuous subarray with maximum sum, Find all distinct combinations of given length – I, Find all distinct combinations of given length with repetition allowed, Find maximum sequence of continuous 1’s formed by replacing at-most k zeroes by ones, Find minimum sum subarray of given size k, Find maximum product subarray in a given array, Find subarray having given sum in given array of integers, Find the length of smallest subarray whose sum of elements is greater than the given number, Find largest number possible from set of given numbers, Find the smallest window in array sorting which will make the entire array sorted, Find maximum sum path involving elements of given arrays, Maximum profit earned by buying and selling shares any number of times, Trapping Rain Water within given set of bars, Find minimum platforms needed in the station so to avoid any delay in arrival of any train, Decode the array constructed from another array, Length of longest continuous sequence with same sum in given binary arrays, Reverse every consecutive m elements of the given subarray, Find pairs with given difference k in the array, Find pairs with given difference k in the array | Constant space solution, 4 sum problem | Quadruplets with given sum, Print all quadruplets with given sum | 4-sum problem extended, Print all Triplets that forms Arithmetic Progression, Print all Triplets that forms Geometric Progression, Print all combination of numbers from 1 to n having sum n, Replace each element of the array by its corresponding rank in the array, Print all Triplets in an array with sum less than or equal to given number, Group elements of an array based on their first occurrence, Find minimum difference between index of two given elements present in the array, Find maximum absolute difference between sum of two non-overlapping sub-arrays, Find all Symmetric Pairs in an Array of Pairs, Partition an array into two sub-arrays with the same sum, Find count of distinct elements in every sub-array of size k, Find two numbers with maximum sum formed by array digits, Print all sub-arrays of an array having distinct elements, Find a Triplet having Maximum Product in an Array, Find Minimum Index of Repeating Element in an Array, Generate random input from an array according to given probabilities, Find pair in an array having minimum absolute sum, Find Index of Maximum Occurring Element with Equal Probability, Check if an Array is Formed by Consecutive Integers, Find two non-overlapping pairs having same sum in an array, Add elements of two arrays into a new array, Find Minimum Product among all Combinations of Triplets in an Array, Replace every element of an array with the least greater element on its right, Find all odd occurring elements in an array having limited range of elements, Count the distinct absolute values in the sorted array, Print all combinations of positive integers in increasing order that sum to a given number, Find all distinct combinations of given length – II, Find subarrays with given sum in an array, Find the surpasser count for each element of an array, Find maximum length sequence of continuous ones (Using Sliding Window), Find maximum length sequence of continuous ones, Find index that divides an array into two non-empty subarrays of equal sum, Calculate frequency of all elements present in an array of specified range, Rearrange the array such that it contains positive and negative numbers at alternate positions, Shuffle an array according to the given order of elements, Count number of strictly increasing sub-arrays in an array, Find duplicates within given range k in an array, Find minimum range with at-least one element from each of the given arrays, Find longest subsequence formed by consecutive integers, Find all elements in an array that are greater than all elements present to their right, Find missing number in array without using extra space, Determine index of an element in given array which satisfies given constraints, Find minimum moves required for converting a given array to an array of zeroes, Find maximum profit earned from at most two stock transactions, Find Frequency of each element in a sorted array containing duplicates, Find Minimum and Maximum element in an array using minimum comparisons, Difference between Subarray, Subsequence and Subset, Find odd occurring element in an array in single traversal, Find odd occurring element in logarithmic time, Find two odd occurring elements in an array without using any extra space, Check if given array represents min heap or not, Find smallest range with at-least one element from each of the given lists, Merge M sorted lists each containing N elements, Find maximum sum of subsequence with no adjacent elements, Find ways to calculate a target from elements of specified array, Sort elements by their frequency and Index, Sort an array based on order defined by another array, Segregate positive and negative integers in linear time, Find number of rotations in a circularly sorted array, Search an element in a circular sorted array, Find first or last occurrence of a given number in a sorted array, Count occurrences of a number in a sorted array with duplicates, Find smallest missing element from a sorted array, Find Floor and Ceil of a number in a sorted array, Search in a nearly sorted array in logarithmic time, Find number of 1’s in a sorted binary array, Find Missing Term in a Sequence in Logarithmic time, Find missing number and duplicate elements in an array, Find Floor and Ceil of a number in a sorted array (Recursive solution), Print all distinct subsets of a given set, Find two duplicate elements in a limited range array (using XOR), Combinations of words formed by replacing given numbers with corresponding alphabets, 3-partition problem extended | Print all partitions, K-Partition Problem | Printing all Partitions, Coin change-making problem (unlimited supply of coins), Coin Change Problem – Find total number of ways to get the denomination of coins, Find maximum profit earned from at most K stock transactions, Print all possible solutions to N Queens Problem, Print all Possible Knight’s Tours in a chessboard, Find path from source to destination in a matrix that satisfies given constraints, Find total number of unique paths in a maze from source to destination, Print All Hamiltonian Path present in a graph, Print all k-colorable configurations of the graph (Vertex coloring of graph), All combinations of elements satisfying given constraints, Find all binary strings that can be formed from given wildcard pattern, Find minimum number possible by doing at-most K swaps, Determine if a pattern matches with a string or not, Generate list of possible words from a character matrix, Find the path between given vertices in a directed graph, Find all Possible Topological Orderings of a DAG, Print all shortest routes in a rectangular grid, Bit Hacks – Part 2 (Playing with k’th bit), Bit Hacks – Part 3 (Playing with rightmost set bit of a number), Bit Hacks – Part 4 (Playing with letters of English alphabet), Bit Hacks – Part 5 (Find absolute value of an integer without branching), Brian Kernighan’s Algorithm to count set bits in an integer, Compute parity of a number using lookup table, Find the minimum or maximum of two integers without using branching, Multiply 16-bit integers using 8-bit multiplier, Swap individual bits at given position in an integer, Check if given number is power of 4 or not, Check if given number is power of 8 or not, Swap two bits at given position in an integer, Add binary representation of two integers, Perform Division of two numbers without using division operator, Check if adjacent bits are set in binary representation of a given number, Conditionally negate a value without branching, Reverse Bits of an integer using lookup table, Circular shift on binary representation of an integer by k positions, Compute modulus division without division and modulo operator, Solve given set of problems without using multiplication or division operators, Find XOR of two numbers without using XOR operator, Check if two given binary trees are identical or not, Inorder Tree Traversal (Iterative & Recursive Implementation), Preorder Tree Traversal (Iterative & Recursive Implementation), Postorder Tree Traversal (Iterative & Recursive Implementation), Reverse Level Order Traversal of Binary Tree, Print all nodes of a given binary tree in specific order, Find next node in same level for given node in a binary tree, Check if given binary tree is complete binary tree or not, In-place convert given binary tree to its sum tree, Determine if given two nodes are cousins of each other, Print cousins of given node in a binary tree, Check if given binary tree is a sum tree or not, Determine if given binary tree is a subtree of another binary tree or not, Check if given binary Tree has symmetric structure or not, Check if binary tree can be converted to another by doing any no. Data Structure and Algorithms for Internships I wanted to create a checklist for must-know data structures and algorithms for college internship interviews. Holy crap, this Looks awesome!!! You need to promote more. From someone doing research in algorithms and data structures or someone just curious about it at an intellectual level, there is a different criticism: All this focus on algorithms for the sake of interview-preparation gives the false impression that the field is a closed body of work. Your donation will allow us to keep bringing the quality material free of cost. Page rank algorithm to find the most important pages 2. Peeling Data Structures and Algorithms: The sample chapter should give you a very good idea of the quality and style of our book. I would like to thank and appreciate the wonderful effort! I think I’m going to make this my home screen as well; or set an alert to visit the site at least once a day. An attempt to solve 500 of data structure problems. Find a pair in the array with given sum; Check for zero sub array I really like the way this page is organized…. I think this site would help tremendously in CP and also for those geeks , in search of beautiful optimizing algorithms!!! Our free resources on Data Structures and Algorithms along with Web Development. I have some fragmented knowledge about arrays, stacks, queues, linked lists, very clueless about trees and I also know my way around a couple searching/sorting algorithms, but I really need to fill in the gaps. In my 20 Years as a programmer and having had a handful of different jobs, I've never been asked once about data structures. As someone who recently finished a data structures class, I wish I knew about this site before today! I’ve gone through a few technical interviews. Find all Symmetric Pairs in an Array of Pairs Medium. 5500+ Hours. This is super interesting list of questions and the best possible solutions discussed in terms of time and space efficiency (from brute force solution to the most optimum). General. 1.3 Data structures, abstract data types, design patterns All problems I have encountered so far were very challenging.. Master Algorithmic Programming Techniques. 5500+ Hours. Get a constantly updating feed of breaking news, fun stories, pics, memes, and videos just for you. This will help me prep, get better at programming and feel more confident overall. Data Structures And Algorithms In The C Programming Language [100% OFF UDEMY COUPON] COURSE AUTHOR – Daniel McCarthy. Thanks for compiling the list! average user rating 0.0 out of 5.0 based on 0 reviews. }); If you like our work, consider supporting us via PayPal. Enter your email address to subscribe to new posts and receive notifications of new posts by email. Unfortunately I can't do LeetCode style questions and this is probably because I've forgotten a great deal of what was taught to me in my data structures and algorithms classes. Maybe a better approach would be both interviewer and interviewee are given a problem from an independent third party. Repeat steps 1 and 2 until all of the data is in sorted 100 MB chunks (there are 900MB / 100MB = 9 chunks), which now need to be merged into one single output file. If you start writing code immediately without asking any questions then it’s not going to end well. This tutorial will give you a great understanding on Data Structures needed to understand the complexity of enterprise level applications and need of algorithms, and data structures. COP 3530 Data Structures and Algorithms Summer 2020 1 Intro to Stepik and Warmup 2 Projects Project 3: Page Rank . originally appeared on Quora: the knowledge sharing network where compelling questions are answered by … This is truly going to be invaluable, thank you! in Electrical Engineering from IIT Roorkee. Algorithms that reduces the website response time 4. I guess the key is to practice to be uncomfortable and do mock interviews . I really appreciate the effort you have put in creating this site. Saved from techiedelight.quora.com. Find minimum difference between index of two given elements present in the array. We shall study the general ideas concerning e ciency in Chapter 5, and then apply them throughout the remainder of these notes. Having a deep and practical understanding of data structures and algorithms is key to acing the job interview and growing your technical career. The resources that we list here are references that we have collected over the internet and some of them from our own website. Naive method. I have graduated 2 months back, and now working in Microsoft for over a month. Free online videos of Data Structures and practice coding questions. 500-datastructures-and-algorithms. Double Linked Lists 3. This book focuses on giving solutions for complex problems in data structures and algorithm. I have done B. Learn Basics of Data Structures & Algorithms in C++ [100% OFF UDEMY COUPON] What you'll learn : • Data Structure and its Types • Search Algorithms and its Concept with Example • Search Algorithm Implementation using C++ • Complexity Analysis of Search Algorithms!!! Wonderful web site. My goal will be to use this to both practice my skills, and learn new languages. 04-03-2017 - 500 Data structures and algorithms interview qu... - Techie Delight - Quora I just wanted to leave a message of thanking you for such a great material. 2000+ Placed. This course provides a platform to learn and improve your problem solving skills using any programming language of your choice. May 3, 2017 - 500 Data Structures and Algorithms practice pro... - Techie Delight - Quora.. Algorithms to ace the technical interview. Reddit gives you the best of the internet in one place. Keep up the great work! 30+ Experts have compiled this list of Best +Free Data Structures and Algorithms Course, Tutorial, Training, Class, and Certification available online for 2021. Your collection is just amazing. Read the problem, come up with a solution, compare your solution, read on to see if there is an optimization, think about the optimization, implement it, then go back and read about their optimized solution. 2000+ Placed. The algorithm uses a set of rules (the data) to find the greatest common divisor, with one example being YouTube tracking a user’s activities to … I read a lot of questions like this and laso see many students asking “What is the best source to learn ds and algo ?” , “From where shoul i start learning ds ?” etc etc . Binary trees!!! Awesome set of questions! Passionate about something niche? Find all Symmetric Pairs in an Array of Pairs. Algorithms that reduces the website response time 4. These courses are structured such that each student spends appropriate time on each topic to generate enough insight to tackle questions of any difficulty level. keep working a good job. Div2 problems are generally straight forward problems like Yushi Wang said. 8000+ Students. I’m still at the point of learning stuff myself. Repeat steps 1 and 2 until all of the data is in sorted 100 MB chunks (there are 900MB / 100MB = 9 chunks), which now need to be merged into one single output file. Is it normal that I won’t be able to answer most of these questions myself ? Although my jobs have been more internal LOB stuff as opposed to consumer facing stuff so that may be why. Courses. Creating a queue 7. A website like google has many algorithms running behind its simple interface 1. Algorithms and Data Structures: Implementation of Algorithms and Data Structures, Interview Questions and Answers intro: This is the collection of algorithms, data structures … Thanks for this wonderful website. Venkatesh Billa Amazon. Which means to say that almost all the times, they can be solved by a brute force approach. 1. Indeed, this is what normally drives the development of new data structures and algorithms. Thank you so much for compiling these! Some problems have 4-5 stages of optimization which I found were good to read and simulates an interview better – building in small steps and increasingly getting harder. 1000. Indeed, this is what normally drives the development of new data structures and algorithms. I personally found reading this very helpful. Post. We shall study the general ideas concerning e ciency in Chapter 5, and then apply them throughout the remainder of these notes. Awesome list. Priyansh Verma, Tower Research Capital. Partition an array into two sub-arrays with the same sum. Find maximum absolute difference between sum of two non-overlapping sub-arrays Hard. In particular, be sure you are comfortable with the level and with our Python coding style. Indexing and Search algorithms 3. Thanks a lot. Want to read this story later? What you'll learn : 1. Just found out yesterday that I’ll be having my first interview for a Google Software Engineering position in about a month. The optimization part is being really helpful. Most of the questions at tech companies are around these topics. View Raymond Yin’s profile on LinkedIn, the world’s largest professional community. Partition an array into two sub-arrays with the same sum Easy. Very well organized and really helpful. Data Structures and Algorithms Specialization. The explanation and the solution TechieDelight provides on most questions is probably the best available online, much better than every other website. data structures and algorithms practice provides a comprehensive and comprehensive pathway for students to see progress after the end of each module. May god bless you. From someone doing research in algorithms and data structures or someone just curious about it at an intellectual level, there is a different criticism: All this focus on algorithms for the sake of interview-preparation gives the false impression that the field is a closed body of work. It contains various data structures and algorithm-related complex problems with appropriate solutions that are useful for readers studying computer science. Build your custom avatar.! There are many Black creators doing incredible work in Tech. External links may contain affiliate links, meaning we get a commission if you decide to make a purchase. For sorting 900 megabytes of data using only 100 megabytes of RAM: Read 100 MB of the data in main memory and sort by some conventional method, like quicksort. Your comment must be between 6 and 500 characters. Data Structures and Algorithms work together to solve computational problems, usually by enabling an algorithm to manipulate data efficiently. Do not make this mistake! 8000+ Students. Distributed algorithms that can run on clusters of machines. Algorithms to ace the technical interview Write the sorted data to disk. 19-04-2017 - 500 Data structures and algorithms interview qu... - Techie Delight - Quora At times I feel that you are in my head. Find count of distinct elements in every sub-array of size k Medium. Man I could have used this last semester. NANODEGREE PROGRAM--nd256 Data Structures and Algorithms ACE TECHNICAL CODING INTERVIEWS Get hands-on practice with over 80 data structures and algorithm exercises and guidance from a dedicated mentor to help prepare you for interviews and on-the-job … There is a big issue you must address: the problem repository is awesome but there is no way one can check if his/her code is correct since you do not have an integrated judge where one can submit and see the verdict as AC/WA. Find a pair in the array with given sum; Check for zero sub array In this course, we consider the common data structures that are used in various computational problems. So a big thanks for making this site. of swaps of left & right child, Find Lowest Common Ancestor (LCA) of two nodes in a binary tree, Print all paths from root to leaf nodes in a binary tree, Find ancestors of given node in a Binary Tree, Find the distance between given pairs of nodes in a binary tree, Perform vertical traversal of a binary tree — I, Perform vertical traversal of a binary tree — II, Print corner nodes of every level in binary tree, Find the diagonal sum of given binary tree, In-place convert Binary Tree to Doubly Linked List, Sink nodes containing zero to the bottom of the binary tree, Convert given binary tree to full tree by removing half nodes, Truncate given binary tree to remove nodes which lie on a path having sum less than K, Find maximum sum root-to-leaf path in a binary tree, Check if given binary tree is height balanced or not, Convert normal binary tree to Left-child right-sibling binary tree, Determine if given Binary Tree is a BST or not, Convert a Binary Tree to BST by maintaining its original structure, Print all paths from leaf to root node in given binary tree, Iteratively print leaf to root path for every leaf node in a binary tree, Build Binary Tree from given Parent array, Find all nodes at given distance from leaf nodes in a binary tree, Count all subtrees having same value of nodes in a binary tree, Find Maximum Difference Between a Node and its Descendants in a Binary Tree, Construct a Binary Tree from Ancestor Matrix, Calculate height of a binary tree with leaf nodes forming a circular doubly linked list, Find maximum sum path between two leaves in a binary tree, Fix a binary tree that is only one swap away from becoming a BST, Construct a binary tree from inorder and preorder traversal, Construct a binary tree from inorder and postorder traversals, Construct a binary tree from inorder and level order sequence, Construct a full binary tree from preorder sequence with leaf node information, Construct a full binary tree from a preorder and postorder sequence, Set next pointer to inorder successor of all nodes in binary tree, Efficiently print all nodes between two given levels in a binary tree, Find preorder traversal of a binary tree from its inorder and postorder sequence, Find the difference between sum of all nodes present at odd and even levels in a binary tree, Find the size of the largest BST in a Binary Tree, Link nodes present in each level of a binary tree in the form of a linked list, Construct a Cartesian Tree from In-order Traversal, Implementation of Treap Data Structure (Insert, Search and Delete), Threaded Binary Tree: Overview and Implementation, Invert alternate levels of a perfect binary tree, Convert a Binary Tree into a Doubly Linked List in Spiral Order, Check if a binary tree is a min-heap or not, Determine if a binary tree satisfy the height-balanced property of red–black tree, Depth first search (DFS) vs Breadth first search (BFS), Check if given keys represents same BSTs or not without building the BST, Find inorder predecessor for given key in a BST, Find Lowest Common Ancestor (LCA) of two nodes in a Binary Search Tree, Find K’th smallest and K’th largest element in BST, Find optimal cost to construct binary search tree, Remove nodes from BST that have keys outside the valid range, Find inorder successor for given key in a BST, Update every key in BST to contain sum of all greater keys, Check if a given sequence represents preorder traversal of a BST, Build a Binary Search Tree from a Postorder Sequence, Build a Binary Search Tree from a Preorder Sequence, Count subtrees in a BST whose nodes lies within a given range, Merge two BSTs into a doubly linked list in sorted order, Construct a height-balanced BST from an unbalanced BST, Convert a Binary Search Tree into a Min Heap, Construct a Height-Balanced BST from a Sorted Doubly Linked List, Maximum Sum Subarray using Divide & Conquer, Division of Two Numbers using Binary Search Algorithm, Longest Common Subsequence | Space optimized version, Longest Common Subsequence of K-sequences, Longest Common Subsequence | Finding all LCS, Shortest Common Supersequence | Finding all SCS, Shortest Common Supersequence Problem using LCS, The Levenshtein Distance (Edit Distance) Problem, Find size of largest square sub-matrix of 1’s present in given binary matrix, Find the minimum cost to reach last cell of the matrix from its first cell, Find longest sequence formed by adjacent numbers in the matrix, Count number of paths in a matrix with given cost to reach destination cell, Total possible solutions to linear equation of k variables, Count number of times a pattern appears in given string as a subsequence, Collect maximum points in a matrix by satisfying given constraints, Find all N-digit binary strings without any consecutive 1’s, Count total possible combinations of N-digit numbers in a mobile keypad, Determine Minimal Adjustment Cost of an Array, Find total ways to achieve given sum with n throws of dice having k faces, Find number of ways to fill a N x 4 matrix with 1 x 4 tiles, Ways to reach the bottom-right corner of a matrix with exactly k turns allowed, Find total ways to reach the n’th stair with at-most m steps, Find total ways to reach the n’th stair from the bottom, Find minimum number of deletions required to convert a string into palindrome, Calculate minimum cost to reach destination city from source city, Find minimum cuts needed for palindromic partition of a string, Weighted Interval Scheduling using LIS algorithm, Find minimum jumps required to reach the destination, Find probability that a person is alive after taking N steps on the island, Calculate size of the largest plus of 1’s in binary matrix, Count all paths in a matrix from first cell to last cell, Check if a string matches with a given wildcard pattern, Check if given string is interleaving of two other given strings, Find all employees who directly or indirectly reports to a manager, Collect maximum value of coins in a matrix, Find length of longest path in the matrix with consecutive characters, Calculate sum of all elements in a sub-matrix in constant time, Find maximum sum K x K sub-matrix in a given M x N matrix, Find maximum sum submatrix present in a given matrix, Single-Source Shortest Paths — Bellman Ford Algorithm, All-Pairs Shortest Paths — Floyd Warshall Algorithm, Terminology and Representations of Graphs, Arrival and Departure Time of Vertices in DFS, Types of edges involved in DFS and relation between them, Determine if a given graph is Bipartite Graph using DFS, Check if an undirected graph contains cycle or not, Total paths in given digraph from given source to destination having exactly m edges, Determine if an undirected graph is a Tree (Acyclic Connected Graph), Check if given digraph is a DAG (Directed Acyclic Graph) or not, Disjoint-Set Data Structure (Union-Find Algorithm), Chess Knight Problem — Find Shortest path from source to destination, Check if given Graph is Strongly Connected or not, Check if given Graph is Strongly Connected or not using one DFS Traversal, Union-Find Algorithm for Cycle Detection in undirected graph, Kruskal’s Algorithm for finding Minimum Spanning Tree, Single-Source Shortest Paths — Dijkstra’s Algorithm, Find Cost of Shortest Path in DAG using one pass of Bellman-Ford, Least Cost Path in Weighted Digraph using BFS, Find maximum cost path in graph from given source to destination, Determine negative-weight cycle in a graph, Least cost path in given digraph from given source to destination having exactly m edges, Find the correct order of alphabets in a given dictionary of ancient origin, Find longest path in a Directed Acyclic Graph (DAG), Construct a directed graph from undirected graph that satisfies given constraints, Introduction to Priority Queues using Binary Heaps, Convert Max Heap to Min Heap in linear time, Find first k non-repeating characters in a string in single traversal, Find first k maximum occurring words in given set of strings, Insert given node into the correct sorted position in the given sorted linked list, Rearrange linked list in increasing order (Sort linked list), Split the nodes of the given linked list into front and back halves, Remove duplicates from a sorted linked list, Move front node of the given list to the front of the another list, Move even nodes to the end of the list in reverse order, Split given linked list into two lists where each list containing alternating elements from it, Construct a linked list by merging alternate nodes of two given lists, Merge Sort Algorithm for Singly Linked List, Intersection of two given sorted linked lists, Reverse every group of k nodes in given linked list, Find K’th node from the end in a linked list, Merge alternate nodes of two linked lists into the first list, Merge two sorted linked lists from their end, Delete every N nodes in a linked list after skipping M nodes, Rearrange linked list in specific manner in linear time, Check if linked list is palindrome or not, Move last node to front in a given Linked List, Rearrange the linked list in specific manner, Detect Cycle in a linked list (Floyd’s Cycle Detection Algorithm), Sort linked list containing 0’s, 1’s and 2’s, Rearrange the linked list so that it has alternating high, low values, Rearrange a Linked List by Separating Odd Nodes from the Even Ones, XOR Linked List: Overview and Implementation, Convert a multilevel linked list to a singly linked list, Recursively check if linked list of characters is palindrome or not, Remove redundant nodes from a path formed by a linked list, Add a single-digit number to a linked list representing a number, Reverse every alternate group of k nodes in a linked list, Determine if a given linked list is a palindrome or not, Sort a Doubly Linked List using Merge Sort, Pairwise swap adjacent nodes of a linked list, Check if a Linked List of String is Palindromic, Swap K’th node from beginning with K’th node from end in a Linked List, Add two linked lists without using any extra space, Update random pointer for each linked list node to point to the maximum node, Convert a Ternary Tree to a Doubly Linked List, Print nodes of a given binary tree in vertical order, In-place merge two sorted linked lists without modifying links of the first list, Reverse specified portion of a Linked List, Shift all matrix elements by 1 in Spiral Order, Find Shortest path from source to destination in a matrix that satisfies given constraints, Change all elements of row i and column j in a matrix to 0 if cell (i, j) has value 0, Print diagonal elements of the matrix having positive slope, Find all paths from first cell to last cell of a matrix, Replace all occurrences of 0 that are not surrounded by 1 in a binary matrix, In-place rotate the matrix by 90 degrees in clock-wise direction, Count negative elements present in sorted matrix in linear time, Report all occurrences of an element in row wise and column wise sorted matrix in linear time, Find shortest safe route in a field with sensors present, Find all occurrences of given string in a character matrix, Check if given matrix is Toeplitz matrix or not, In-place rotate the matrix by 180 degrees, Fill Binary Matrix with Alternating Rectangles of 0 and 1, Find all common elements present in every row of given matrix, Find common elements present in all rows of a matrix, Find index of the row containing maximum number of 1’s in a binary matrix, Find the largest square sub-matrix which is surrounded by all 1's, Find minimum passes required to convert all negative values in the matrix, Print a spiral square matrix without using any extra space, Young Tableau | Insert, Search, Extract-Min, Delete, Replace, Find the maximum value of M[c][d] — M[a][b] over all choices of indexes, Find shortest distance of every cell from landmine in a Maze, Find shortest route in a device to construct the given string, Travelling Salesman Problem using Branch and Bound, Clock Angle Problem — Find angle between hour and minute hand, Add two numbers without using addition operator, Implement power function without using multiplication and division operators, Print all numbers between 1 to N without using semicolon, Swap two numbers without using third variable, Determine the if condition to print specific output, Find maximum & minimum of triplet without using conditional statement and ternary operator, Find numbers represented as sum of two cubes for two different pairs, Print “Hello World” with empty main() function, Print all numbers between 1 to N without using any loop, Print a semicolon without using semicolon anywhere in the program, Multiply two numbers without using multiplication operator or loops, Find square of a number without using multiplication and division operator, Find if a number is even or odd without using any conditional statement, Set both elements of a binary array to 0 in single line, Find minimum number without using conditional statement or ternary operator, Generate 0 and 1 with 75% and 25% Probability, Generate Desired Random Numbers With Equal Probability, Return 0, 1 and 2 with equal Probability using the specified function, Generate numbers from 1 to 7 with equal probability using specified function, Implement Ternary Operator Without Using Conditional Expressions, Determine if two integers are equal without using comparison and arithmetic operators, Return 0 and 1 with equal Probability using the specified function, Implement Stack using Queue Data Structure, Implement a Queue using Stack Data Structure, Iterative Merge Sort Algorithm (Bottom-up Merge Sort), QuickSort using Dutch National Flag Algorithm, QuickSort using Hoare’s Partitioning scheme, Problems solved using partitioning logic of QuickSort, Efficiently sort an array with many duplicated values, Segregate positive and negative integers using Merge Sort, Group anagrams together from given list of words, Check if given expression is balanced expression or not, Find duplicate parenthesis in an expression, Decode the given sequence to construct minimum number without repeated digits, Design a stack which returns minimum element in constant time, Design a stack which returns minimum element without using auxiliary stack, Find length of the longest balanced parenthesis in a string, Reverse a string using stack data structure, Reverse given text without reversing the individual words, Print leaf to root path for every leaf node in a binary tree, Check if given string is a rotated palindrome or not, Longest Palindromic Substring (Non-DP Space Optimized Solution), Check if repeated subsequence is present in the string or not, Check if strings can be derived from each other by circularly rotating them, Check if given set of moves is circular or not, Convert given number into corresponding excel column name, Determine if two strings are anagram or not, Find all possible palindromic substrings in a string, Find all possible combinations of words formed from mobile keypad, Find all possible combinations by replacing given digits with characters of the corresponding list, Find all words from given list that follows same order of characters as given pattern, Find minimum operations required to transform a string into another string, Determine if a string can be transformed into another string with a single edit, In place remove all occurrences of ‘AB’ and ‘C’ from the string, Longest even length palindromic sum substring, Run Length Encoding (RLE) Data Compression Algorithm, Find the longest substring of given string containing k distinct characters, Find all palindromic permutations of a string, Find all substrings of a string that are permutation of a given string, Find the longest substring of given string containing all distinct characters, Iterative Approach to find Permutations of a String, Generate all Permutations of a String in Java, Find all lexicographically next permutations of a string sorted in ascending order, Find Lexicographically minimal string rotation, Find all strings of given length containing balanced parentheses, Find all combinations of non-overlapping substrings of a string, Determine if a given string is palindrome or not, Find the minimum number of inversions needed to make the given expression balanced, Construct the longest palindrome by shuffling or deleting characters from a string, Print all combinations of phrases formed by picking words from each of the given lists, Break a string into all possible combinations of non-overlapping substrings, Remove adjacent duplicate characters from a string, Find first non-repeating character in a string by doing only one traversal of it, Find all N-digit strictly increasing numbers (Bottom-Up and Top-Down Approach), Find all N-digit binary numbers having more 1’s than 0’s for any prefix, Find all N-digit numbers with given sum of digits, Find all N-digit binary numbers with k-bits set where k ranges from 1 to N, Find all N-digit binary numbers with equal sum of bits in its two halves, Find all N-digit numbers with equal sum of digits at even and odd index, Find all Lexicographic Permutations of a String, Find all lexicographically previous permutations of a string sorted in descending order, Replace all non-overlapping occurrences of the pattern, Determine if characters of a String follow a specified order or not, In-place remove all adjacent duplicates from the given string, Check if given sentence is syntactically correct or not, Find all words matching a pattern in the given dictionary, Longest Palindromic Subsequence using Dynamic Programming, Memory Efficient Implementation of Trie | Insert, Search and Delete, Longest Common Prefix in given set of strings (using Trie), Lexicographic sorting of given set of keys, Find maximum occurring word in given set of strings, When The Racist Is Someone You Know and Love…, I was married to a narcissist for 12 years — and I had NO idea, Attention Angry White People: 7 New Rules, America’s Breeding Farms: What History Books Never Told You, How Google Tracks Your Personal Information. 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Pdf so I can read like a book ways to practice to be quora 500 data structures and algorithms, thank you key... An attempt to solve computational problems a message of thanking you for such a great material from my in. For over a month than algorithms follow this link or you will be banned from site. Techie Delight - Quora worthy of study in any context for readers studying Computer and. List worthy of study in any context, Microsoft, Google, a few startups, Facebook,.!
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