Search⌘ K
AI Features

Solution: Number of Substrings Containing All Three Characters

Explore how to use the sliding window approach to count the number of substrings in a string that contain at least one 'a', 'b', and 'c'. Understand how to dynamically adjust the window and use frequency counts to optimize the solution to O(n) time with constant space.

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 ...