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Problem: Number of Substrings Containing All Three Characters

Medium
30 min
Explore how to apply the sliding window technique to count substrings containing all three characters 'a', 'b', and 'c'. Understand the problem constraints and implement an efficient solution to handle large input strings. This lesson helps you develop skills to solve substring counting problems optimized for performance.

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 s.length 5×104\leq 5 \times 10^4

  • s consists only of characters 'a', 'b', or 'c'.

Problem
Ask
Submissions

Problem: Number of Substrings Containing All Three Characters

Medium
30 min
Explore how to apply the sliding window technique to count substrings containing all three characters 'a', 'b', and 'c'. Understand the problem constraints and implement an efficient solution to handle large input strings. This lesson helps you develop skills to solve substring counting problems optimized for performance.

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 s.length 5×104\leq 5 \times 10^4

  • s consists only of characters 'a', 'b', or 'c'.