How to Solve Maximum Difference Between Even and Odd Frequency I I Problem
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Maximum Difference Between Even and Odd Frequency II
You are given a string s and an integer k. Your task is to find the maximum difference between the frequency of two characters, freq[a] - freq[b], in a substring subs of s, such that: subs has a size ...
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Understanding the Maximum Difference Between Even and Odd Frequency I I Problem
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Problem Statement
You are given a string s and an integer k. Your task is to find the maximum difference between the frequency of two characters, freq[a] - freq[b], in a substring subs of s, such that: subs has a size of at least k. Character a has an odd frequency in subs. Character b has a non-zero even frequency in subs. Return the maximum difference. Note that subs can contain more than 2 distinct characters.
Maximum Difference Between Even and Odd Frequency II
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Examples
s = "12233", k = 4-1For the substring "12233", the frequency of '1' is 1 and the frequency of '3' is 2. The difference is 1 - 2 = -1.
s = "1122211", k = 31For the substring "11222", the frequency of '2' is 3 and the frequency of '1' is 2. The difference is 3 - 2 = 1.
s = "110", k = 3-1Constraints
3 <= s.length <= 3 * 104s consists only of digits '0' to '4'.The input is generated that at least one substring has a character with an even frequency and a character with an odd frequency.1 <= k <= s.lengthHow Interview Coder Helps with Leetcode Problems
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