Web Reference: Decode String - Given an encoded string, return its decoded string. The encoding rule is: k [encoded_string], where the encoded_string inside the square brackets is being repeated exactly k times. Note that k is guaranteed to be a positive integer. In-depth solution and explanation for LeetCode 394. Decode String in Python, Java, C++ and more. Intuitions, example walk through, and complexity analysis. Better than official and forum solutions. The Decode String problem is elegantly solved by using a stack to manage nested repetitions. By carefully tracking the current string and repeat count at each level, we can efficiently and cleanly decode even complex nested encodings in a single pass.
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