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Solution: String Compression

Understand how to apply the two pointers technique to compress strings in place by encoding consecutive repeating characters with counts. Learn to implement a run-length encoding solution in JavaScript that overwrites the input array using constant space and operates in linear time.

Statement

Given an array of characters, chars, compress it in place according to the following rules:

  1. Start with an empty string s.

  2. For each group of consecutive repeating characters in chars:

    1. If the group length is ...