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Grokking the Coding Interview Patterns in Python

Solution: Decode String

Explore how to decode an encoded string by implementing a stack-based approach. This lesson teaches you to handle nested repetitions efficiently by tracking counts and substrings, enabling you to reconstruct the original string from the encoded format.

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Statement

Given an encoded string, return its decoded version. The encoding rule follows the pattern: k[encoded string]k[encoded~string] ...