Solution: Number of Substrings Containing All Three Characters
Explore how to apply the sliding window approach to count the number of substrings that include at least one 'a', 'b', and 'c'. Understand how left and right pointers move to maintain valid windows, and grasp the time and space complexity of this method.
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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:
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