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Problems explorer

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2100 problems in this topic

# Title Topics Acceptance Pts Difficulty
51 Reorder List — 30 Medium Solve
52 Reverse Linked List — 20 Easy Solve
53 Reverse Nodes in k-Group — 40 Hard Solve
54 Rotate Image — 30 Medium Solve
55 Rotting Oranges — 30 Medium Solve
56 Same Tree — 20 Easy Solve
57 Serialize and Deserialize Binary Tree — 40 Hard Solve
58 Set Matrix Zeroes — 30 Medium Solve
59 Sliding Window Maximum — 40 Hard Solve
60 Subsets — 30 Medium Solve
61 Sum of Two Integers — 30 Medium Solve
62 Surrounded Regions — 30 Medium Solve
63 Task Scheduler — 30 Medium Solve
64 Task Scheduler — 30 Medium Solve
65 Top K Frequent Elements — 30 Medium Solve
66 Unique Paths — 30 Medium Solve
67 3Sum — 30 Medium Solve
68 Alien Dictionary — 40 Hard Solve
69 Best Time to Buy and Sell Stock with Cooldown — 30 Medium Solve
70 Binary Tree Maximum Path Sum — 40 Hard Solve
71 Binary Tree Right Side View — 30 Medium Solve
72 Burst Balloons — 40 Hard Solve
73 Cheapest Flights Within K Stops — 30 Medium Solve
74 Combination Sum II — 30 Medium Solve
75 Combination Sum II — 30 Medium Solve
76 Course Schedule — 30 Medium Solve
77 Detect Squares — 30 Medium Solve
78 Distinct Subsequences — 40 Hard Solve
79 Edit Distance — 40 Hard Solve
80 Evaluate Reverse Polish Notation — 30 Medium Solve
81 Find the Duplicate Number — 30 Medium Solve
82 Graph Valid Tree — 30 Medium Solve
83 House Robber — 30 Medium Solve
84 Implement Trie (Prefix Tree) — 30 Medium Solve
85 Invert Binary Tree — 20 Easy Solve
86 Jump Game — 30 Medium Solve
87 K Closest Points to Origin — 30 Medium Solve
88 Kth Largest Element in an Array — 30 Medium Solve
89 Kth Smallest Element in a BST — 30 Medium Solve
90 LRU Cache — 30 Medium Solve
91 Largest Rectangle in Histogram — 40 Hard Solve
92 Letter Combinations of a Phone Number — 30 Medium Solve
93 Longest Increasing Subsequence — 30 Medium Solve
94 Longest Increasing Subsequence — 30 Medium Solve
95 Lowest Common Ancestor of a Binary Search Tree — 30 Medium Solve
96 Maximum Depth of Binary Tree — 20 Easy Solve
97 Median of Two Sorted Arrays — 40 Hard Solve
98 Meeting Rooms — 20 Easy Solve
99 Meeting Rooms II — 30 Medium Solve
100 Merge Intervals — 30 Medium Solve
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