Explore problems with interactive animations
Two Sum
Array + HashMap
Easy
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Capacity To Ship Packages Within D Days
Binary Search
Medium
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Longest Substring Without Repeating Characters
Sliding Window
Medium
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Merge Intervals
Greedy + Sorting
Medium
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Minimum Size Subarray Sum
Sliding Window
Medium
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Number of Islands
DFS / BFS
Medium
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Subarray Sum Equals K
Prefix Sum + HashMap
Medium
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Top K Frequent Elements
Heap / Priority Queue
Medium
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