How to Solve Minimum Length of String After Deleting Similar Ends Problem
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Minimum Length of String After Deleting Similar Ends
Given a string s consisting only of characters 'a', 'b', and 'c'. You are asked to apply the following algorithm on the string any number of times: Pick a non-empty prefix from the string s where all ...
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Understanding the Minimum Length of String After Deleting Similar Ends Problem
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Problem Statement
Given a string s consisting only of characters 'a', 'b', and 'c'. You are asked to apply the following algorithm on the string any number of times: Pick a non-empty prefix from the string s where all the characters in the prefix are equal. Pick a non-empty suffix from the string s where all the characters in this suffix are equal. The prefix and the suffix should not intersect at any index. The characters from the prefix and suffix must be the same. Delete both the prefix and the suffix. Return the minimum length of s after performing the above operation any number of times (possibly zero times).
Minimum Length of String After Deleting Similar Ends
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Examples
s = "ca"2You can't remove any characters, so the string stays as is.
s = "cabaabac"0An optimal sequence of operations is: - Take prefix = "c" and suffix = "c" and remove them, s = "abaaba". - Take prefix = "a" and suffix = "a" and remove them, s = "baab". - Take prefix = "b" and suffix = "b" and remove them, s = "aa". - Take prefix = "a" and suffix = "a" and remove them, s = "".
s = "aabccabba"3An optimal sequence of operations is: - Take prefix = "aa" and suffix = "a" and remove them, s = "bccabb". - Take prefix = "b" and suffix = "bb" and remove them, s = "cca".
Constraints
1 <= s.length <= 105s only consists of characters 'a', 'b', and 'c'.How Interview Coder Helps with Leetcode Problems
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