Solution: Partition Labels
Understand how to solve the Partition Labels problem by applying the two pointers technique combined with a last-occurrence map to divide a string into valid partitions. This lesson helps you identify partitions ensuring no letter overlaps between segments, optimizing for maximum partitions with efficient time and space complexity.
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Statement
You are given a string s. Your task is to divide the string into as many parts as possible such that each letter appears in at most one part.
In other words, no character should occur in more than one partition. After concatenating all parts in order, the result should be the original string s.
For example, given s = "bcbcdd", a valid partition is ["bcbc", "dd"]. However, partitions like ["bcb", "cdd"] or ["bc", "bc", "dd"] are invalid because some letters appear in multiple parts.
Return a list of integers representing the sizes of these partitions.
Constraints:
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