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Find K Closest Elements

medium Solve on LeetCode

Last edited: July 18, 2026

Problem
Examples
Solution
Method 1 – Two Pointers (Shrink Window from Both Ends)
Intuition
Approach
Code
Complexity
Method 2 – Binary Search + Two Pointers (Expand from Closest Index)
Intuition
Approach
Code
Complexity
Method 3 – Binary Search for Window Start (No Math.abs)
Intuition
Approach
Why Not Compare Absolute Values?
Code
Complexity

Related Tags

binary-search coordinate-geometry heap-priority-queue leetcode search/binary sliding-window two-pointers

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