NeetCode #507LC-1239MediumBacktracking
← Back to All Problems#507 · #1239 · Maximum Length of a Concatenated String with Unique Characters(串联字符串的最大长度)
📌 Problem Statement & Constraints
You are given an array of strings
arr. Concatenate a subsequence of them so that the concatenated string has all unique characters. Return the maximum possible length. Constraints: 1 <= arr.length <= 16, 1 <= arr[i].length <= 26, lowercase letters.🔒
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