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Solution: String Compression

Explore how to efficiently compress strings in JavaScript using the two pointers pattern. This lesson helps you implement run-length encoding in place with constant extra space, managing character groups and counts cleverly. Understand the algorithm's time and space complexity to master an essential coding interview technique.

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 ...