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Grokking the Coding Interview Patterns in JavaScript

Solution: Remove All Adjacent Duplicates In String

Explore how to remove all adjacent duplicates in a string by applying the stack pattern. This lesson helps you implement an optimized, linear time solution by pushing and popping characters on a stack, improving over naive quadratic approaches.

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Statement

You are given a string consisting of lowercase English letters. Repeatedly remove adjacent duplicate letters, one pair at a time. Both members of a pair of adjacent duplicate letters need to be removed.

Constraints:

  • 1≤1 \leq string.length
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