Minimum Length Of String After Operations
Delete closest matching chars from left & right to minimize string length. Focus on char freqs: reduce >=3 to <=2, sum remaining counts.
3223. Minimum Length of String After Operations Difficulty: Medium Topics: Hash Table, String, Counting You are given a string s. You can perform the following process on s any number of times: Choose an index i in the string such that there is at least one character to the left of index i that is equal to s[i], and at least one character to the right that is also equal to s[i]. Delete the closest character to the left of index i that is equal to s[i]. Delete the closest character to the right of index i that is equal to s[i]. Return the minimum length of the final string s that you can achi...