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Solution: Number of Substrings Containing All Three Characters

Explore how to apply the sliding window method to count substrings that include at least one occurrence of 'a', 'b', and 'c'. Understand window expansion and shrinking to optimize substring counting and improve your problem-solving efficiency in coding interviews.

Statement

Given a string s that consists only of the characters 'a', 'b', and 'c', return the number of substrings that contain at least one occurrence of each of the three characters.

Constraints:

  • 33 \leq ...