Striver 79 Last Moment

Striver's 79 Last Moment DSA Sheet. The most important 79 problems to revise right before your interview. Quick revision, maximum coverage.

Azhar Khan60 problems7 Easy38 Med15 Hard

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Hard

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Title	Solution	Practice	Difficulty	Companies	Topics
188. Best Time to Buy and Sell Stock IV	Solution	Solve	Hard	-	Array Dynamic Programming
516. Longest Palindromic Subsequence	Solution	Solve	Medium	-	Dynamic Programming String
421. Maximum XOR of Two Numbers in an Array	Solution	Solve	Medium	-	Array Bit Manipulation+2
312. Burst Balloons	Solution	Solve	Hard	-	Array Dynamic Programming
72. Edit Distance	Solution	Solve	Medium	-	Dynamic Programming String
300. Longest Increasing Subsequence	Solution	Solve	Medium	-	Array Binary Search+1
921. Minimum Add to Make Parentheses Valid	Solution	Solve	Medium	-	Greedy Stack+1
208. Implement Trie (Prefix Tree)	Solution	Solve	Medium	-	Design Hash Table+2
1143. Longest Common Subsequence	Solution	Solve	Medium	-	Dynamic Programming String
269. Alien Dictionary	Solution	Solve	Hard	-	Array Breadth-First Search+4
543. Diameter of Binary Tree	Solution	Solve	Easy	-	Binary Tree Depth-First Search+1
239. Sliding Window Maximum	Solution	Solve	Hard	-	Array Heap (Priority Queue)+3
328. Odd Even Linked List	Solution	Solve	Medium	-	Linked List
333. Largest BST Subtree	Solution	Solve	Medium	-	Binary Search Tree Binary Tree+3
236. Lowest Common Ancestor of a Binary Tree	Solution	Solve	Medium	-	Binary Tree Depth-First Search+1
450. Delete Node in a BST	Solution	Solve	Medium	-	Binary Search Tree Binary Tree+1
455. Assign Cookies	Solution	Solve	Easy	-	Array Greedy+2
235. Lowest Common Ancestor of a Binary Search Tree	Solution	Solve	Medium	-	Binary Search Tree Binary Tree+2
496. Next Greater Element I	Solution	Solve	Easy	-	Array Hash Table+2
215. Kth Largest Element in an Array	Solution	Solve	Medium	-	Array Divide and Conquer+3
621. Task Scheduler	Solution	Solve	Medium	-	Array Counting+4
653. Two Sum IV - Input is a BST	Solution	Solve	Easy	-	Binary Search Tree Binary Tree+5
721. Accounts Merge	Solution	Solve	Medium	-	Array Breadth-First Search+5
735. Asteroid Collision	Solution	Solve	Medium	-	Array Simulation+1
774. Minimize Max Distance to Gas Station	Solution	Solve	Hard	-	Array Binary Search
787. Cheapest Flights Within K Stops	Solution	Solve	Medium	-	Breadth-First Search Depth-First Search+4
875. Koko Eating Bananas	Solution	Solve	Medium	-	Array Binary Search
876. Middle of the Linked List	Solution	Solve	Easy	-	Linked List Two Pointers
994. Rotting Oranges	Solution	Solve	Medium	-	Array Breadth-First Search+1
1192. Critical Connections in a Network	Solution	Solve	Hard	-	Biconnected Component Depth-First Search+1
1489. Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree	Solution	Solve	Hard	-	Graph Minimum Spanning Tree+3
3193. Count the Number of Inversions	Solution	Solve	Hard	-	Array Dynamic Programming
105. Construct Binary Tree from Preorder and Inorder Traversal	Solution	Solve	Medium	-	Array Binary Tree+3
15. 3Sum	Solution	Solve	Medium	-	Array Sorting+1
19. Remove Nth Node From End of List	Solution	Solve	Medium	-	Linked List Two Pointers
31. Next Permutation	Solution	Solve	Medium	-	Array Two Pointers
37. Sudoku Solver	Solution	Solve	Hard	-	Array Backtracking+2
39. Combination Sum	Solution	Solve	Medium	-	Array Backtracking
42. Trapping Rain Water	Solution	Solve	Hard	-	Array Dynamic Programming+3
51. N-Queens	Solution	Solve	Hard	-	Array Backtracking
53. Maximum Subarray	Solution	Solve	Medium	-	Array Divide and Conquer+1
64. Minimum Path Sum	Solution	Solve	Medium	-	Array Dynamic Programming+1
78. Subsets	Solution	Solve	Medium	-	Array Backtracking+1
79. Word Search	Solution	Solve	Medium	-	Array Backtracking+2
81. Search in Rotated Sorted Array II	Solution	Solve	Medium	-	Array Binary Search
84. Largest Rectangle in Histogram	Solution	Solve	Hard	-	Array Monotonic Stack+1
229. Majority Element II	Solution	Solve	Medium	-	Array Counting+2
124. Binary Tree Maximum Path Sum	Solution	Solve	Hard	-	Binary Tree Depth-First Search+2
127. Word Ladder	Solution	Solve	Hard	-	Breadth-First Search Hash Table+1
141. Linked List Cycle	Solution	Solve	Easy	-	Hash Table Linked List+1
146. LRU Cache	Solution	Solve	Medium	-	Design Doubly-Linked List+2
148. Sort List	Solution	Solve	Medium	-	Divide and Conquer Linked List+3
152. Maximum Product Subarray	Solution	Solve	Medium	-	Array Dynamic Programming
153. Find Minimum in Rotated Sorted Array	Solution	Solve	Medium	-	Array Binary Search
160. Intersection of Two Linked Lists	Solution	Solve	Easy	-	Hash Table Linked List+1
162. Find Peak Element	Solution	Solve	Medium	-	Array Binary Search
198. House Robber	Solution	Solve	Medium	-	Array Dynamic Programming
200. Number of Islands	Solution	Solve	Medium	-	Array Breadth-First Search+3
210. Course Schedule II	Solution	Solve	Medium	-	Breadth-First Search Depth-First Search+2
4. Median of Two Sorted Arrays	Solution	Solve	Hard	-	Array Binary Search+1