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DIY: String Compression

Explore how to compress a list of characters by grouping consecutive duplicates and encoding their counts in-place. Understand the algorithm’s constant space requirements and implement the StringCompression function to return the compressed length. This lesson helps you develop skills essential for solving space-efficient string manipulation problems in coding interviews.

Problem statement

You are given a list of characters. Your task will be to compress this list, using the following algorithm:

For each group of consecutive repeating characters in the string:

  1. If the group’s length is 1, you will append the character to s.
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