How to Solve Minimum Deletions to Make Character Frequencies Unique Problem
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Minimum Deletions to Make Character Frequencies Unique
A string s is called good if there are no two different characters in s that have the same frequency. Given a string s, return the minimum number of characters you need to delete to make s good. The f...
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Understanding the Minimum Deletions to Make Character Frequencies Unique Problem
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Problem Statement
A string s is called good if there are no two different characters in s that have the same frequency. Given a string s, return the minimum number of characters you need to delete to make s good. The frequency of a character in a string is the number of times it appears in the string. For example, in the string "aab", the frequency of 'a' is 2, while the frequency of 'b' is 1.
Minimum Deletions to Make Character Frequencies Unique
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Examples
s = "aab"0s is already good.
s = "aaabbbcc"2You can delete two 'b's resulting in the good string "aaabcc". Another way it to delete one 'b' and one 'c' resulting in the good string "aaabbc".
s = "ceabaacb"2You can delete both 'c's resulting in the good string "eabaab". Note that we only care about characters that are still in the string at the end (i.e. frequency of 0 is ignored).
Constraints
1 <= s.length <= 105s contains only lowercase English letters.How Interview Coder Helps with Leetcode Problems
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