Practice Problems

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115 Problems
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Longest Increasing Path in a Matrix
Dynamic Programming Graph Matrix
Hard
52.2%
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Network Delay Time
Graph
Hard
75.0%
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Distinct Subsequences
Dynamic Programming String
Hard
35.3%
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Split Array Largest Sum
Binary Search Dynamic Programming Greedy
Hard
75.0%
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Count of Smaller Numbers After Self
Binary Search Divide and Conquer Merge Sort
Hard
40.0%
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Burst Balloons
Divide and Conquer Dynamic Programming
Hard
45.5%
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Longest Valid Parentheses
Dynamic Programming Stack String
Hard
20.0%
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Count Palindromic Substrings
Dynamic Programming String
Medium
51.5%
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Target Sum
Backtracking Dynamic Programming
Medium
43.5%
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Search a Sorted 2D Matrix
Binary Search Matrix
Medium
44.6%
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Rotting Oranges
Graph Matrix
Medium
46.4%
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Number of Provinces
Graph Union Find
Medium
40.2%
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Course Schedule
Graph Topological Sort
Medium
47.9%
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Perfect Squares
Dynamic Programming Math
Medium
49.2%
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Longest Common Subsequence
Dynamic Programming String
Medium
45.8%
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Partition Labels
Greedy Hash Table Two Pointers
Medium
52.7%
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Gas Station Circuit
Array Greedy
Medium
53.4%
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Sort Colors (Dutch Flag)
Array Sorting Two Pointers
Medium
43.6%
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Permutation in String
Hash Table Sliding Window String
Medium
48.0%
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Longest Repeating Character Replacement
Hash Table Sliding Window String
Medium
50.0%
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