3325. Count Substrings With K-Frequency Characters I

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Given a string s and an integer k, return the total number of substrings of s where at least one character appears at least k times. Example 1: Input: s = "abacb", k = 2 Output: 4 Explanation: The valid substrings are: - "aba" (character 'a' appears 2 times). - "abac" (character 'a' appears 2 times). - "abacb" (character 'a' appears 2 times). - "bacb" (character 'b' appears 2 times). E

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solution.cppC++17

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