This list was provided by @Ujjawal_278 on this page, but the links to the questions were not included. I added the links using ChatGPT.
Array
| Problem | LeetCode Link | Difficulty Level |
|---|
| Check if pair with the given Sum exists in Array | Link | Easy |
| Best Time to Buy and Sell Stock | Link | Easy |
| Find duplicates | Link | Medium |
| Product of Array Except Self | Link | Medium |
| Maximum Subarray | Link | Easy |
| Maximum Product Subarray | Link | Medium |
| Find Minimum in Rotated Sorted Array | Link | Medium |
| Search in Rotated Sorted Array | Link | Medium |
| 3 Sum | Link | Medium |
| Container With Most Water | Link | Medium |
| Find the Factorial of a large number | Link | Medium |
| Trapping Rain Water | Link | Hard |
| Chocolate Distribution Problem | Link | Medium |
| Insert Interval | Link | Hard |
| Merge Intervals | Link | Medium |
| Non-overlapping Intervals | Link | Medium |
| Set Matrix Zeroes | Link | Medium |
| Spiral Matrix | Link | Medium |
Linked List
| Problem | LeetCode Link | Difficulty Level |
|---|
| Reverse a Linked List | Link | Easy |
| Detect Cycle in a Linked List | Link | Medium |
| Merge Two Sorted Lists | Link | Easy |
| Merge K Sorted Lists | Link | Hard |
| Remove Nth Node From End Of List | Link | Medium |
| Reorder List | Link | Medium |
| Add 1 to a number represented as linked list | Link | Medium |
| Find the middle of a given linked list | Link | Easy |
| Delete last occurrence of an item from linked list | Link | Easy |
String
| Problem | LeetCode Link | Difficulty Level |
|---|
| Longest Substring Without Repeating Characters | Link | Medium |
| Longest Repeating Character Replacement | Link | Medium |
| Smallest window in a String containing all characters of other String | Link | Hard |
| Check whether two Strings are anagram of each other | Link | Easy |
| Print all anagrams together | Link | Medium |
Stack and Queue
| Problem | LeetCode Link | Difficulty Level |
|---|
| Check if given Parentheses expression is balanced or not | Link | Easy |
| Delete middle element of a stack | Link | Medium |
Tree and Graph
| Problem | LeetCode Link | Difficulty Level |
|---|
| Invert/Flip Binary Tree | Link | Easy |
| Binary Tree Maximum Path Sum | Link | Hard |
| Binary Tree Level Order Traversal | Link | Medium |
| Serialize and Deserialize Binary Tree | Link | Hard |
| Subtree of Another Tree | Link | Easy |
| Construct Binary Tree from Preorder and Inorder Traversal | Link | Medium |
| Validate Binary Search Tree | Link | Medium |
| Kth Smallest Element in a BST | Link | Medium |
| Lowest Common Ancestor of BST | Link | Easy |
| Implement Trie (Prefix Tree) | Link | Medium |
| Add and Search Word | Link | Medium |
Dynamic Programming
| Problem | LeetCode Link | Difficulty Level |
|---|
| Coin Change | Link | Medium |
| 0/1 Knapsack Problem | Link | Medium |
| Longest Increasing Subsequence | Link | Medium |
| Longest Common Subsequence | Link | Medium |
| Word Break Problem | Link | Medium |
Graph
| Problem | LeetCode Link | Difficulty Level |
|---|
| Detect Cycle in a Directed Graph | Link | Medium |
| Bridges in a graph | Link | Hard |
| Check whether a given graph is Bipartite or not | Link | Medium |
| Strongly Connected Components | Link | Hard |
| Topological Sorting | Link | Medium |
Miscellaneous
| Problem | LeetCode Link | Difficulty Level |
|---|
| Sentence Palindrome | Link | Easy |
| Palindromic Substrings | Link | Medium |
| Longest Common Prefix | Link | Easy |
| Print Right View of a Binary Tree | Link | Medium |
| Find the first circular tour that visits all petrol pumps | Link | Medium |
| Length of the longest valid substring | Link | Hard |
| Find the XOR of all subsets of a set | Link | Medium |
| Detect Cycle in a Directed Graph | Link | Medium |
| Bridges in a graph | Link | Medium |
| Check whether a given graph is Bipartite or not | Link | Medium |
| Find size of the largest region in Boolean Matrix | Link | Medium |
| Flood fill Algorithm | Link | Medium |
| Strongly Connected Components | Link | Medium |
| Topological Sorting | Link | Medium |
| Count ways to reach the n’th stair | Link | Easy |
| Coin Change | Link | Medium |
| 0/1 Knapsack Problem | Link | Medium |
| Longest Increasing Subsequence | Link | Medium |
| Longest Common Subsequence | Link | Medium |
| Word Break Problem | Link | Medium |
| Dice Throw | Link | Medium |
| Egg Dropping Puzzle | Link | Hard |
| Matrix Chain Multiplication | Link | Medium |
| Combination Sum | Link | Medium |
| Subset Sum Problem | Link | Medium |
| Find maximum possible stolen value from houses | Link | Medium |
| Count Possible Decodings of a given Digit Sequence | Link | Medium |
| Unique paths in a Grid with Obstacles | Link | Medium |
| Jump Game | Link | Medium |
| Cutting a Rod | Link | Medium |
| Maximum Product Cutting | Link | Medium |
| Count number of ways to cover a distance | Link | Easy |
| Number of 1 Bits | Link | Easy |
| Counting Bits | Link | Medium |
| Missing Number | Link | Easy |
| Reverse Bits | Link | Easy |
| Find XOR of all subsets of a set | Link | Medium |
