Problem Library

Master these coding challenges to ace your next technical interview. Handpicked problems with personalized spaced repetition.

Showing 1-15 of 15 matching problems in Striver A to Z.

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Array34Dynamic Programming15Depth-First Search11

These are the topics showing up most often in your current queue.

Title	Difficulty	Topics
5. Longest Palindromic Substring Open source	Medium	Two PointersStringDynamic Programming+1 more
42. Trapping Rain Water Open source	Hard	ArrayTwo PointersDynamic Programming+2 more
53. Maximum Subarray Open source	Medium	ArrayDivide and ConquerDynamic Programming
62. Unique Paths Open source	Medium	MathDynamic ProgrammingCombinatorics
91. Decode Ways Open source	Medium	StringDynamic Programming
118. Pascal's Triangle Open source	Easy	ArrayDynamic Programming
121. Best Time to Buy and Sell Stock Open source	Easy	ArrayDynamic Programming
122. Best Time to Buy and Sell Stock II Open source	Medium	ArrayDynamic ProgrammingGreedy
152. Maximum Product Subarray Open source	Medium	ArrayDynamic Programming
198. House Robber Open source	Medium	ArrayDynamic Programming
213. House Robber II Open source	Medium	ArrayDynamic Programming
300. Longest Increasing Subsequence Open source	Medium	ArrayBinary SearchDynamic Programming+1 more
416. Partition Equal Subset Sum Open source	Medium	ArrayDynamic ProgrammingKnapsack Problem+1 more
435. Non-overlapping Intervals Open source	Medium	ArrayDynamic ProgrammingGreedy+1 more
1143. Longest Common Subsequence Open source	Medium	StringDynamic ProgrammingLongest Common Subsequence