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Solution: Custom Sort String

Explore how to solve the Custom Sort String problem by counting character frequencies with a hash map and reordering the string based on a given order. This lesson helps you understand efficient string manipulation and apply hash map data structures to meet specific ordering constraints while analyzing 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 order.length 26\leq 26 ...