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30 exercises with solutions and explanations.

Showing 1–30 of 30

1 Task Scheduler Medium 2 Combination Sum II Medium 3 Max Area of Island Medium 4 Redundant Connection Medium 5 Swim in Rising Water Hard 6 Longest Palindromic Substring Medium 7 Partition Equal Subset Sum Medium 8 Longest Increasing Path in a Matrix Hard 9 Jump Game II Medium 10 Merge Intervals Medium 11 Set Matrix Zeroes Medium 12 Number of 1 Bits Easy 13 Valid Anagram Easy 14 Longest Consecutive Sequence Medium 15 Longest Substring Without Repeating Characters Medium 16 Evaluate Reverse Polish Notation Medium 17 Koko Eating Bananas Medium 18 Reorder List Medium 19 Merge k Sorted Lists Hard 20 Subtree of Another Tree Easy 21 Construct Binary Tree from Preorder and Inorder Traversal Medium 22 Last Stone Weight Easy 23 Combination Sum Medium 24 N-Queens Hard 25 Walls and Gates Medium 26 Reconstruct Itinerary Hard 27 Min Cost Climbing Stairs Easy 28 Maximum Product Subarray Medium 29 Coin Change 2 Medium 30 Regular Expression Matching Hard
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