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Solution: Custom Sort String

Understand how to solve the custom sort string problem by counting character frequencies with hash maps and building a permuted string that follows a given order. This lesson teaches you to apply hash maps for efficient character ordering and explore time and space complexity considerations.

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 ...