This repository contains the editorials of the top interview questions from the workat.tech practice platform.
| Problem Name | Practice Link | Editorial Link |
|---|---|---|
| Cumulative Sum | Problem | Editorial |
| Positive Cumulative Sum | Problem | Editorial |
| Identical Twins | Problem | Editorial |
| Even Number of Digits | Problem | Editorial |
| Implement Insertion Sort | Problem | Editorial |
| Merge Two Sorted Arrays | Problem | Editorial |
| Merge Sorted Subarrays | Problem | Editorial |
| Implement Merge Sort | Problem | Editorial |
| Implement Quicksort | Problem | Editorial |
| Square sorted array | Problem | Editorial |
| Max Consecutive Ones | Problem | Editorial |
| Arithmetic Sequence | Problem | Editorial |
| Largest Contiguous Sum | Problem | Editorial |
| Pascal's Triangle | Problem | Editorial |
| Row Column Zero | Problem | Editorial |
| Matrix Rotation | Problem | Editorial |
| Merge Overlapping Intervals | Problem | Editorial |
| Kth Largest Element | Problem | Editorial |
| Next Greater Permutation | Problem | Editorial |
| Inversion Count | Problem | Editorial |
| Contains Element? | Problem | Editorial |
| Search Range | Problem | Editorial |
| Negative numbers in sorted array | Problem | Editorial |
| Next Greater Element In Sorted Array | Problem | Editorial |
| Insert Position in Sorted Array | Problem | Editorial |
| Is Perfect Square | Problem | Editorial |
| Search Rotated Sorted Array | Problem | Editorial |
| Square Root | Problem | Editorial |
| Matrix Search | Problem | Editorial |
| Median of Row-wise Sorted Matrix | Problem | Editorial |
| Remove occurences | Problem | Editorial |
| Two Sum Sorted | Problem | Editorial |
| K-Subarray Sum | Problem | Editorial |
| Unique Elements in Sorted Array | Problem | Editorial |
| k-diff pairs | Problem | Editorial |
| Kth element of two sorted lists | Problem | Editorial |
| Sorted Arrays Intersection | Problem | Editorial |
| Dutch National Flag | Problem | Editorial |
| Trapping Rain Water | Problem | Editorial |
| Maximum K-Subarray Sum | Problem | Editorial |
| k-Substring Vowels | Problem | Editorial |
| Maximum k-Substring Vowels | Problem | Editorial |
| Print Linked List | Problem | Editorial |
| Linked List to Array | Problem | Editorial |
| Print Reversed Linked List | Problem | Editorial |
| Kth Element in Linked List | Problem | Editorial |
| Add Element at Kth Position in Linked List | Problem | Editorial |
| Remove Element at Kth Position in Linked List | Problem | Editorial |
| Append Linked Lists | Problem | Editorial |
| Reverse a Linked List | Problem | Editorial |
| Remove occurrences in Linked List | Problem | Editorial |
| Middle Element of Linked List | Problem | Editorial |
| Merge Two Sorted Linked List | Problem | Editorial |
| Delete Node From Linked List | Problem | Editorial |
| Linked List Palindrome | Problem | Editorial |
| Intersection of Two Linked Lists | Problem | Editorial |
| Remove Duplicates from Sorted Linked List | Problem | Editorial |
| Remove Duplicates from Sorted Linked List - II | Problem | Editorial |
| Find xth Node from End of Linked List | Problem | Editorial |
| Delete Xth Node From End of Linked List | Problem | Editorial |
| Add Two Numbers as Lists | Problem | Editorial |
| Reverse a Linked List II | Problem | Editorial |
| Reverse a Linked List in k-groups | Problem | Editorial |
| Add One to Linked List | Problem | Editorial |
| Reorder List | Problem | Editorial |
| Rotate a Linked List | Problem | Editorial |
| Detect Loop in Linked List | Problem | Editorial |
| Remove Loop From Linked List | Problem | Editorial |
| Flatten a Multi-Level Linked List | Problem | Editorial |
| Partition List | Problem | Editorial |
| Insertion Sort Linked List | Problem | Editorial |
| Merge Sort Linked List | Problem | Editorial |
| Implement Stack using Array | Problem | Editorial |
| Implement Stack using Linked List | Problem | Editorial |
| Implement Queue using Array | Problem | Editorial |
| Implement Queue using Linked List | Problem | Editorial |
| Implement Queue using Stacks | Problem | Editorial |
| Implement Stack using Queues | Problem | Editorial |
| Balanced Parentheses | Problem | Editorial |
| Implement Min Stack | Problem | Editorial |
| Evaluate Reverse Polish Notation | Problem | Editorial |
| Next Greater Element | Problem | Editorial |
| Simplify Directory Path | Problem | Editorial |
| Rotting Apples | Problem | Editorial |
| Sliding Window Maximum | Problem | Editorial |
| Largest Rectangle in Histogram | Problem | Editorial |
| Implement Counting Sort | Problem | Editorial |
| Non-Repeating Element | Problem | Editorial |
| Two Sum | Problem | Editorial |
| Three Sum | Problem | Editorial |
| Four Sum | Problem | Editorial |
| Longest Consecutive Sequence | Problem | Editorial |
| Longest Subarray with Zero Sum | Problem | Editorial |
| Longest Substring Without Repeat | Problem | Editorial |
| Distinct Numbers in Window | Problem | Editorial |
| Subarrays With Given XOR | Problem | Editorial |
| Longest Substring with K Unique Characters | Problem | Editorial |
| Clone List with Random Pointer | Problem | Editorial |
| LRU Cache | Problem | Editorial |
| Rat In A Maze | Problem | Editorial |
| Subsets | Problem | Editorial |
| Subsets - II | Problem | Editorial |
| Subset Sum | Problem | Editorial |
| Combination Sum 1 | Problem | Editorial |
| Combination Sum 2 | Problem | Editorial |
| Combinations | Problem | Editorial |
| Tug of War | Problem | Editorial |
| String Permutations | Problem | Editorial |
| Letter Combinations of a Phone Number | Problem | Editorial |
| Generate Parentheses | Problem | Editorial |
| Restore IP Addresses | Problem | Editorial |
| Consecutively Descending Integers | Problem | Editorial |
| N Queens Problem | Problem | Editorial |
| Sudoku Solver | Problem | Editorial |
| Kth Permutation Sequence | Problem | Editorial |
| Binary Tree Inorder Traversal | Problem | Editorial |
| Binary Tree Preorder Traversal | Problem | Editorial |
| Binary Tree Postorder Traversal | Problem | Editorial |
| Level Order of Binary Tree | Problem | Editorial |
| Identical Binary Trees | Problem | Editorial |
| Symmetric Binary Tree | Problem | Editorial |
| Maximum Depth of Binary Tree | Problem | Editorial |
| Diameter of Binary Tree | Problem | Editorial |
| Invert Binary Tree | Problem | Editorial |
| Balanced Binary Tree | Problem | Editorial |
| Binary Tree Zigzag Level Order Traversal | Problem | Editorial |
| Construct Binary Tree from Preorder and Inorder Traversal | Problem | Editorial |
| Construct Binary Tree from Inorder and Postorder Traversal | Problem | Editorial |
| Left View of Binary Tree | Problem | Editorial |
| Right View of Binary Tree | Problem | Editorial |
| Top View of Binary Tree | Problem | Editorial |
| Bottom View of Binary Tree | Problem | Editorial |
| Lowest Common Ancestor in Binary Tree | Problem | Editorial |
| Flatten Binary Tree to Linked List | Problem | Editorial |
| Populating Next Right Pointers in Each Node | Problem | Editorial |
| Maximum Path Sum of Binary Tree | Problem | Editorial |
| Binary Tree to Doubly Linked List | Problem | Editorial |
| Search in a Binary Search Tree (BST) | Problem | Editorial |
| Insert into a Binary Search Tree (BST) | Problem | Editorial |
| Inorder Successor of Node in BST | Problem | Editorial |
| Inorder Predecessor of Node in BST | Problem | Editorial |
| Delete Node in a Binary Search Tree (BST) | Problem | Editorial |
| Lowest Common Ancestor in BST | Problem | Editorial |
| Is Binary Tree BST | Problem | Editorial |
| Two Sum in BST | Problem | Editorial |
| Kth Largest in BST | Problem | Editorial |
| Kth Smallest in BST | Problem | Editorial |
| Binary Search Tree (BST) Iterator | Problem | Editorial |
| Serialize and Deserialize Binary Search Tree (BST) | Problem | Editorial |
| Size of the Largest BST in a Binary Tree | Problem | Editorial |
| Kth Largest Element From Data Stream | Problem | Editorial |
| Median From Data Stream | Problem | Editorial |
| Merge K Sorted Arrays | Problem | Editorial |
| Sort Almost Sorted Array | Problem | Editorial |
| Excel Column Number | Problem | Editorial |
| Trailing Zeroes | Problem | Editorial |
| Greatest Common Divisor | Problem | Editorial |
| Primes upto N | Problem | Editorial |
| Matrix Paths | Problem | Editorial |
| Exponentiation With Modulus | Problem | Editorial |
| Most Significant Bit | Problem | Editorial |
| Power Of Two | Problem | Editorial |
| Count Set Bits | Problem | Editorial |
| Find the Duplicate Number | Problem | Editorial |
| Find the Missing Number | Problem | Editorial |
| Repeat and Missing Number in Array | Problem | Editorial |
| Divide without Division, Multiplication & Mod | Problem | Editorial |
| Square without Multiplication, Division & Pow | Problem | Editorial |
| Power Set | Problem | Editorial |
| Climbing Stairs | Problem | Editorial |
| Longest Increasing Subsequence (LIS) | Problem | Editorial |
| Longest Common Subsequence (LCS) | Problem | Editorial |
| Maximum Sum Increasing Subsequence | Problem | Editorial |
| Longest Palindromic Substring (LPS) | Problem | Editorial |
| Edit Distance (Levenshtein Distance) | Problem | Editorial |
| Collect Jewels | Problem | Editorial |
| Subset Sum 2 | Problem | Editorial |
| Maximum path sum in matrix | Problem | Editorial |
| Rod Cutting | Problem | Editorial |
| Coin Change | Problem | Editorial |
| Decode Ways | Problem | Editorial |
| Unique Paths | Problem | Editorial |
| Maximum Product Subarray | Problem | Editorial |
| Minimum Egg Drops | Problem | Editorial |
| Palindrome Partitioning | Problem | Editorial |
| Palindrome Partitioning 2 | Problem | Editorial |
| Word Break | Problem | Editorial |
| Word Break - II | Problem | Editorial |
| Best Time to Buy and Sell Stocks | Problem | Editorial |
| Best Time to Buy and Sell Stocks II | Problem | Editorial |
| Best Time to Buy and Sell Stock III | Problem | Editorial |
| Best Time to Buy and Sell Stock IV | Problem | Editorial |
| Regular Expression Matching | Problem | Editorial |
| Wildcard Matching | Problem | Editorial |
| Max Meetings in a Room | Problem | Editorial |
| Sack of Grains | Problem | Editorial |
| Tasks for Profit | Problem | Editorial |
| Trains and Platforms | Problem | Editorial |
| Adjacency List to Adjacency Matrix | Problem | Editorial |
| Adjacency Matrix to Adjacency List | Problem | Editorial |
| Edges to Adjacency Matrix | Problem | Editorial |
| Edges to Adjacency List | Problem | Editorial |
| DFS of an Acyclic Graph | Problem | Editorial |
| DFS of a Cyclic Graph | Problem | Editorial |
| BFS of a Graph | Problem | Editorial |
| Clone a Graph | Problem | Editorial |
| Detect Cycle In Directed Graph | Problem | Editorial |
| Detect Cycle In Undirected Graph | Problem | Editorial |
| Valid Course Schedule | Problem | Editorial |
| Path Exists in Directed Graph | Problem | Editorial |
| Flood Fill Image | Problem | Editorial |
| Number of Islands | Problem | Editorial |
| Valid Path | Problem | Editorial |
| Capture Surrounded Regions | Problem | Editorial |
| Knight's Journey On A Chessboard | Problem | Editorial |
| Word Search Board | Problem | Editorial |
| Stepping Numbers | Problem | Editorial |
| M-Coloring Problem | Problem | Editorial |
| Is Graph Bipartite | Problem | Editorial |
| Word Ladder | Problem | Editorial |
| Detect Cycle in Undirected Graph using Union-Find Algorithm | Problem | Editorial |
| Minimum Spanning Tree using Kruskal's Algorithm | Problem | Editorial |
| Minimum Spanning Tree using Prim's Algorithm | Problem | Editorial |
| Minimum Distance in Graph using Dijkstra’s Algorithm | Problem | Editorial |
| Reverse Words in String | Problem | Editorial |
| Longest Palindrome in String | Problem | Editorial |
| Roman Numeral to Integer | Problem | Editorial |
| Integer to Roman Numeral | Problem | Editorial |
| Substring Search - I | Problem | Editorial |
| Substring Search - II | Problem | Editorial |
| Substring Search - III | Problem | Editorial |
| Substring Search - IV | Problem | Editorial |
| Longest Common Prefix | Problem | Editorial |
| Insert Minimum To Make Palindrome | Problem | Editorial |
| Anagrams | Problem | Editorial |
| Count And Say | Problem | Editorial |
| Compare Version Numbers | Problem | Editorial |
| Shortest Unique Prefix | Problem | Editorial |
| Restaurant Reviews | Problem | Editorial |