Grokking the Coding Interview: Patterns for Coding Questions
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Extra Characters in a String (medium)

Problem Statement

Given a string s and an array of words words. Break string s into multiple non-overlapping substrings such that each substring should be part of the words. There are some characters left which are not part of any substring.

Return the minimum number of remaining characters in s, which are not part of any substring after string break-up.


  1. Example 1:
    • Input: s = "amazingracecar", words = ["race", "car"]
    • Expected Output: 7
    • Justification: The string `s




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