leetle

Daily challenge for 2025-10-12

285. Remove All Adjacent Duplicates in String

You are given a string s. Repeatedly remove adjacent duplicate characters from the string. Return the final string after all such duplicate removals have been made.

Example:
Input: s = "abbaca"
Output: "ca"
Explanation: Remove "bb" to get "aaca", then remove "aa" to get "ca"

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