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Solution: Remove All Adjacent Duplicates In String

Explore how to use stacks to efficiently solve the problem of removing all adjacent duplicate letters from a string. Learn step-by-step how to push and pop characters to achieve an optimal O(n) time solution, understanding both naive and improved approaches in detail.

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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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