🧠 Before you code — what pattern fits?
Given an array of characters chars, compress it in place: consecutive repeating characters become the character followed by the group length (if greater than 1; lengths of 10 or more are split into separate digit characters).
Return the new length of the array. For this judge, return the compressed prefix as its length (the array is checked up to that length).
["a","a","b","b","c","c","c"] → 6, array becomes ["a","2","b","2","c","3"]
🎬 Video explanation · Apna College
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