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Leetcode 1585. Check If String Is Transformable With Substring Sort Operations
Given two equal-length digit strings s and t, determine whether s can be transformed into t by repeatedly choosing substrings and sorting them in ascending order in-place. The core challenge is to check whether each digit required by t can be moved into position from s without being blocked by smaller digits, i.e., whether the relative order constraints imposed by substring-sorts allow the target arrangement.
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