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Grokking the Coding Interview Patterns

Solution: Decode String

Understand how to decode encoded strings using a stack-based method that manages nested and sequential patterns. Learn to process digits, letters, and brackets to build the decoded result. This lesson helps you master handling complex string decoding problems commonly encountered in coding interviews.

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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] ...