Problem Library

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

Showing 1-18 of 18 matching problems in Blind 75.

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Array36String19Depth-First Search18

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Title	Difficulty	Topics
5. Longest Palindromic Substring Open source	Medium	Two PointersStringDynamic Programming+1 more
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
70. Climbing Stairs Open source	Easy	MathDynamic ProgrammingMemoization
91. Decode Ways Open source	Medium	StringDynamic Programming
121. Best Time to Buy and Sell Stock Open source	Easy	ArrayDynamic Programming
124. Binary Tree Maximum Path Sum Open source	Hard	Dynamic ProgrammingTreeDepth-First Search+2 more
139. Word Break Open source	Medium	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
300. Longest Increasing Subsequence Open source	Medium	ArrayBinary SearchDynamic Programming+1 more
322. Coin Change Open source	Medium	ArrayDynamic ProgrammingBreadth-First Search+2 more
338. Counting Bits Open source	Easy	Dynamic ProgrammingBit Manipulation
435. Non-overlapping Intervals Open source	Medium	ArrayDynamic ProgrammingGreedy+1 more
647. Palindromic Substrings Open source	Medium	Two PointersStringDynamic Programming
1143. Longest Common Subsequence Open source	Medium	StringDynamic ProgrammingLongest Common Subsequence