Problem Library

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

All tracks Blind 75 NeetCode 150 NeetCode 250 Striver A to Z SDE Sheet

Showing 1-25 of 55 matching problems in NeetCode 250.

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Array141Dynamic Programming55String53

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Title	Difficulty	Topics
5. Longest Palindromic Substring Open source	Medium	Two PointersStringDynamic Programming+1 more
10. Regular Expression Matching Open source	Hard	StringDynamic ProgrammingRecursion
22. Generate Parentheses Open source	Medium	StringDynamic ProgrammingBacktracking+1 more
42. Trapping Rain Water Open source	Hard	ArrayTwo PointersDynamic Programming+2 more
45. Jump Game II Open source	Medium	ArrayDynamic ProgrammingGreedy
53. Maximum Subarray Open source	Medium	ArrayDivide and ConquerDynamic Programming
55. Jump Game Open source	Medium	ArrayDynamic ProgrammingGreedy
62. Unique Paths Open source	Medium	MathDynamic ProgrammingCombinatorics
63. Unique Paths II Open source	Medium	ArrayDynamic ProgrammingMatrix
64. Minimum Path Sum Open source	Medium	ArrayDynamic ProgrammingMatrix
70. Climbing Stairs Open source	Easy	MathDynamic ProgrammingMemoization
72. Edit Distance Open source	Medium	StringDynamic Programming
91. Decode Ways Open source	Medium	StringDynamic Programming
97. Interleaving String Open source	Medium	StringDynamic Programming
115. Distinct Subsequences Open source	Hard	StringDynamic 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
124. Binary Tree Maximum Path Sum Open source	Hard	Dynamic ProgrammingTreeDepth-First Search+2 more
131. Palindrome Partitioning Open source	Medium	StringDynamic ProgrammingBacktracking
139. Word Break Open source	Medium	ArrayHash TableString+4 more
140. Word Break II Open source	Hard	ArrayHash TableString+4 more
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
279. Perfect Squares Open source	Medium	MathDynamic ProgrammingBreadth-First Search+2 more