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Solution: Custom Sort String

Understand how to apply hash maps to solve the custom sort string challenge by counting character frequencies and constructing a reordered string that follows a specified character order. This lesson helps you implement an efficient algorithm with clear time and space complexity insights.

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 order.length 26\leq 26 ...