Search⌘ K

DIY: Decoding a String

Explore how to decode complex nested encoded strings by implementing a function that expands repeated patterns within a string. This lesson helps you understand recursive and iterative approaches to handle encoding formats typically seen in technical interviews, preparing you for practical problem-solving scenarios.

Problem statement

Given an encoded string, return its decoded string.

The input string is encoded such that k[pattern] should be decoded to pattern repeatedly for k ...