Note: Date after Blank means Same date
| No. | Date | Problem-Title | Difficulty | Solution |
|---|---|---|---|---|
| 01 | 04-06-2023 | Set Matrix Zero | Easy | Solution |
| 02 | Pascal's Triangle | Easy | Solution | |
| 03 | Next Permutation | Moderate | Solution | |
| 04 | Maximum Subarray Sum | Moderate | Solution | |
| 05 | 05-06-2023 | Sort 0 1 2 | Easy | Solution |
| 06 | Best Time to Buy and Sell Stock | Moderate | Solution | |
| 07 | Rotate Matrix | Moderate | Solution | |
| 08 | Merge Intervals | Moderate | Solution | |
| 09 | 07-06-2023 | Merge two Sorted Arrays | Moderate | Solution |
| 10 | Find Duplicate in Array | Easy | Solution | |
| 11 | Missing and repeating numbers | Moderate | Solution | |
| 12 | Count Inversions | Moderate | Solution | |
| 13 | 08-06-2023 | Search in a 2D Matrix | Easy | Solution |
| 14 | Modular Exponentiation | Easy | Solution | |
| 15 | Majority Element | Easy | Solution | |
| 16 | Majority Element II | Easy | Solution | |
| 17 | 09-06-2023 | Unique Paths | Moderate | Solution |
| 18 | Reverse Pairs | Hard | Solution | |
| 19 | Pair Sum | Easy | Solution | |
| 20 | Find Four Elements That Sums To A Given Value | Moderate | Solution | |
| 21 | 10-06-2023 | Longest Consecutive Sequence | Moderate | Solution |
| 22 | Longest Subarray Zero Sum | Easy | Solution | |
| 23 | Count Subarrays with Given XOR | Moderate | Solution | |
| 24 | Longest Substring Without Repeating Characters | Moderate | Solution | |
| 25 | 11-06-2023 | Reverse Linked List | Moderate | Solution |
| 26 | Middle Of Linked List | Easy | Solution | |
| 27 | Merge Two Sorted Linked Lists | Moderate | Solution | |
| 28 | Delete Kth Node From End | Moderate | Solution | |
| 29 | 12-06-2023 | Add Two Numbers | Moderate | Solution |
| 30 | Delete Node In A Linked List | Easy | Solution | |
| 31 | Intersection of Two Linked Lists | Easy | Solution | |
| 32 | Cycle Detection in a Singly Linked List | Moderate | Solution | |
| 33 | 13-06-2023 | Reverse Nodes in k-Group | Hard | Solution |
| 34 | Palindrome Linked List | Easy | Solution | |
| 35 | Linked List Cycle II | Moderate | Solution | |
| 36 | Flatten A Linked List | Easy | Solution | |
| 37 | 14-06-2023 | Rotate Linked List | Moderate | Solution |
| 38 | Copy List with Random Pointer | Easy | Solution | |
| 39 | 3 Sum | Moderate | Solution | |
| 40 | Trapping Rain Water | Moderate | Solution | |
| 41 | 15-06-2023 | Remove Duplicates from Sorted Array | Easy | Solution |
| 42 | Maximum Consecutive Ones | Moderate | Solution | |
| 43 | Maximum meetings | Easy | Solution | |
| 44 | Minimum Number of Platforms | MOderate | Solution | |
| 45 | 16-06-2023 | Job Sequencing Problem | Moderate | Solution |
| 46 | Fractional Knapsack | Easy | Solution | |
| 47 | Find Minimum Number Of Coins | Easy | Solution | |
| 48 | Maximum activities | Easy | Solution | |
| 49 | 17-06-2023 | Subset Sum | Easy | Solution |
| 50 | Subsets II | MOderate | Solution | |
| 51 | Return Subsets Sum to K | Moderate | Solution | |
| 52 | Combination Sum II | Moderate | Solution | |
| 53 | 18-06-2023 | Palindrome Partitioning | Moderate | Solution |
| 54 | K-th Permutation Sequence | Moderate | Solution | |
| 55 | Print Permutations - String | Easy | Solution | |
| 56 | N Queens | Hard | Solution | |
| 57 | 19-06-2023 | Valid Sudoku | Moderate | Solution |
| 58 | M-Coloring Problem | Moderate | Solution | |
| 59 | Rat In a Maze All Paths | Moderate | Solution | |
| 60 | Word Break II | Hard | Solution | |
| 61 | 20-06-2023 | Find Nth Root Of M | Easy | Solution |
| 62 | Matrix Median | Moderate | Solution | |
| 63 | Single Element in a Sorted Array | Easy | Solution | |
| 64 | Search In Rotated Sorted Array | Moderate | Solution | |
| 65 | 21-06-2023 | Median of two sorted arrays | Hard | Solution |
| 66 | Kth Element of Two Sorted Arrays | Hard | Solution | |
| 67 | Allocate Books | Moderate | Solution | |
| 68 | Chess Tournament | Easy | Solution | |
| 69 | 22-06-2023 | Min Heap | Moderate | Solution |
| 70 | Kth Smallest and Largest Element of Array | Easy | Solution | |
| 71 | K Max Sum Combinations | Easy | Solution | |
| 72 | Running Median | Hard | Solution | |
| 73 | 23-06-2023 | Merge K Sorted Arrays | Moderate | Solution |
| 74 | K Most Frequent Elements | Moderate | Solution | |
| 75 | Implement Trie | Hard | Solution | |
| 76 | Implement Trie ll | Moderate | Solution | |
| 77 | 24-06-2023 | Complete String | Hard | Solution |
| 78 | Number Of Distinct Substring | Moderate | Solution | |
| 79 | Power Set | Easy | Solution | |
| 80 | Maximum XOR of Two Numbers in an Array | Moderate | Solution | |
| 81 | 25-06-2023 | Maximum XOR With an Element From Array | Hard | Solution |
| 82 | Stack Implementation Using Array | Easy | Solution | |
| 83 | Implement a Queue | Easy | Solution | |
| 84 | Stack using queue | Moderate | Solution | |
| 85 | 26-06-2023 | Queue Using Stack | Moderate | Solution |
| 86 | Valid Parentheses | Easy | Solution | |
| 87 | Next Greater Element | Moderate | Solution | |
| 88 | Sort a Stack | Easy | Solution | |
| 89 | 27-06-2023 | Next Smaller Element | Moderate | Solution |
| 90 | LRU Cache Implementation | Moderate | Solution | |
| 91 | LFU Cache | Moderate | Solution | |
| 92 | Largest rectangle in a histogram | Hard | Solution | |
| 93 | 28-06-2023 | Maximum In Sliding Windows Of Size K | Moderate | Solution |
| 94 | Min Stack | Easy | Solution | |
| 95 | Rotting Oranges | Moderate | Solution | |
| 96 | Online Stock Span | Moderate | Solution | |
| 97 | 29-06-2023 | Maximum of minimum for every window size | Hard | Solution |
| 98 | The Celebrity Problem | Moderate | Solution | |
| 99 | Reverse Words In A String | Easy | Solution | |
| 100 | Longest Palindromic Substring | Easy | Solution | |
| 101 | 30-06-2023 | Roman Numeral To Integer | Easy | Solution |
| 102 | Implement Atoi Function | Easy | Solution | |
| 103 | Longest Common Prefix | Moderate | Solution | |
| 104 | Search Pattern (Rabin-Karp Algorithm) | Moderate | Solution | |
| ---- | ------ | ---------------------------------------------- | ------- | ------- |
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| 105 | 01-07-2023 | Z Algorithm | Hard | Solution |
| 106 | Find Pattern in String - KMP Algorithm | Easy | Solution | |
| 107 | Minimum Characters For Palindrome | Hard | Solution | |
| 108 | Check Permutation | Easy | Solution | |
| 109 | 02-07-2023 | Count And Say | Moderate | Solution |
| 110 | Compare Version Numbers | Easy | Solution | |
| 111 | Inorder Traversal | Easy | Solution | |
| 112 | Preorder Traversal | Easy | Solution | |
| 113 | 03-07-2023 | Postorder Traversal | Easy | Solution |
| 114 | Left View Of a Binary Tree | Easy | Solution | |
| 115 | Bottom View Of Binary Tree | Moderate | Solution | |
| 116 | Top View Of Binary Tree | Moderate | Solution | |
| 117 | 04-07-2023 | Tree Traversals | Easy | Solution |
| 118 | Vertical Order Traversal | Moderate | Solution | |
| 119 | Path In A Tree | Moderate | Solution | |
| 120 | Maximum Width In Binary Tree | Moderate | Solution | |
| 121 | 05-07-2023 | Level Order Traversal | Easy | Solution |
| 122 | Height of the Binary Tree From Inorder and Level Order Traversal | Moderate | Solution | |
| 123 | Diameter Of Binary Tree | Easy | Solution | |
| 124 | Is Height Balanced Binary Tree | Moderate | Solution | |
| 125 | 06-07-2023 | LCA Of Binary Tree | Moderate | Solution |
| 126 | Check Identical Trees | Moderate | Solution | |
| 127 | Binary Tree Zigzag Traversal | Easy | Solution | |
| 128 | Boundary Traversal of Binary Tree | Hard | Solution | |
| 129 | 07-07-2023 | Maximum Path Sum Between Two Leaves | Hard | Solution |
| 130 | Construct Binary Tree From Inorder and Preorder Traversal | Easy | Solution | |
| 131 | Construct Binary Tree from Inorder and Postorder Traversal | Moderate | Solution | |
| 132 | Symmetric Tree | Easy | Solution | |
| 133 | 08-07-2023 | Flatten Binary Tree to Linked List | Moderate | Solution |
| 134 | Invert a Binary Tree | Moderate | Solution | |
| 135 | Children Sum Property | Moderate | Solution | |
| 136 | Connect Nodes at Same Level | Moderate | Solution | |
| 137 | 09-07-2023 | Search In BST | Easy | Solution |
| 138 | Convert Sorted Array to BST | Easy | Solution | |
| 139 | Construct BST from Preorder Traversal | Moderate | Solution | |
| 140 | Partial BST | Moderate | Solution | |
| 141 | 10-07-2023 | LCA of Two Nodes In A BST | Moderate | Solution |
| 142 | Predecessor And Successor In BST | Easy | Solution | |
| 143 | Floor in BST | Moderate | Solution | |
| 144 | Ceil from BST | Easy | Solution | |
| 145 | 11-07-2023 | K-th largest Number BST | Easy | Solution |
| 146 | Kth smallest node in BST | Moderate | Solution | |
| 147 | Pair Sum in BST | Easy | Solution | |
| 148 | BST Iterator | Moderate | Solution | |
| 149 | 12-07-2023 | Size of Largest BST in Binary Tree | Easy | Solution |
| 150 | Serialize and Deserialize Binary Tree | Hard | Solution | |
| 151 | Convert A Given Binary Tree To Doubly Linked List | Moderate | Solution | |
| 152 | Median in a stream | Hard | Solution | |
| 153 | 13-07-2023 | Kth Largest Element In A Stream | Moderate | Solution |
| 154 | Count Distinct Element in Every K Size Window | Easy | Solution | |
| 155 | Kth largest element in the unsorted array | Moderate | Solution | |
| 156 | Flood Fill Algorithm | Moderate | Solution | |
| 157 | 14-07-2023 | Clone Graph | Moderate | Solution |
| 158 | DFS Traversal | Moderate | Solution | |
| 159 | BFS in Graph | Easy | Solution | |
| 160 | Cycle Detection In Undirected Graph | Moderate | Solution | |
| 161 | 15-07-2023 | Detect Cycle In A Directed Graph | Moderate | Solution |
| 162 | Topological Sort | Moderate | Solution | |
| 163 | Find Number Of Islands | Moderate | Solution | |
| 164 | Check Bipartite Graph | Moderate | Solution | |
| 165 | 16-07-2023 | Strongly Connected Components (Tarjan’s Algorithm) | Hard | Solution |
| 166 | Dijkstra's shortest path | Moderate | Solution | |
| 167 | Bellman Ford | Moderate | Solution | |
| 168 | Floyd Warshall | Moderate | Solution | |
| 169 | 17-07-2023 | Prim's MST | Moderate | Solution |
| 170 | Kruskal’s Minimum Spanning Tree Algorithm | Moderate | Solution | |
| 171 | Maximum Product Subarray | Moderate | Solution | |
| 172 | Longest Increasing Subsequence | Moderate | Solution | |
| 173 | 18-07-2023 | Longest Common Subsequence | Moderate | Solution |
| 174 | 0 1 Knapsack | Moderate | Solution | |
| 175 | Edit Distance | Moderate | Solution | |
| 176 | Maximum Sum Increasing Subsequence | Moderate | Solution | |
| 177 | 20-07-2023 | Matrix Chain Multiplication | Moderate | Solution |
| 178 | Minimum Path Sum | Moderate | Solution | |
| 179 | Ways To Make Coin Change | Moderate | Solution | |
| 180 | Subset Sum Equal To K | Moderate | Solution | |
| 181 | 21-07-2023 | Rod cutting problem | Moderate | Solution |
| 182 | Cut Logs | Hard | Solution | |
| 183 | Word Break | Moderate | Solution | |
| 184 | Palindrome Partitioning ll | Hard | Solution |
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