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Solution: Custom Sort String

Explore how to solve the Custom Sort String problem by using hash maps to count character frequencies and reorder a string according to a given unique character order. Understand how to implement this solution efficiently in C++ while managing time and space complexity.

Statement

Given two strings, order and s, where all characters in order are unique and arranged in a custom order, return any permutation of s that satisfies the following condition:

The characters in the permuted s should appear in the same relative order as they do in order. Specifically, if a character x appears before a character y in order, then x must also appear before y in the permuted string.

Constraints:

  • 11 \leq ...