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3330. Find the Original Typed String I

  • Alice is trying to type a specific string on her computer but may press a key for too long resulting in duplicate characters.
  • The task is to determine the total number of possible original strings that Alice might have intended to type.
  • For each contiguous run of characters in the input string, there are L-1 possible original strings, where L is the length of the run.
  • The algorithm processes each character in the string once, with a time complexity of O(n) and space complexity of O(1).

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