tech-interview-handbook/questions/06-string-compression.md

id	title	topics	difficulty
6	String Compression and Decompression	string	easy

Question

'''
Given a string, compress it by grouping repeated characters. The length after
compression must always be smaller than or equal to the original string.

'aaabbccc' => 'a3b2c3'
'''

'''
Given the above compressed string, decompress to obtain the original string.

'a3b2c3' => 'aaabbccc'
'''