How to Solve Process String with Special Operations I Problem
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Process String with Special Operations I
You are given a string s consisting of lowercase English letters and the special characters: *, #, and %. Build a new string result by processing s according to the following rules from left to right:...
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Understanding the Process String with Special Operations I Problem
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Problem Statement
You are given a string s consisting of lowercase English letters and the special characters: *, #, and %. Build a new string result by processing s according to the following rules from left to right: If the letter is a lowercase English letter append it to result. A '*' removes the last character from result, if it exists. A '#' duplicates the current result and appends it to itself. A '%' reverses the current result. Return the final string result after processing all characters in s.
Process String with Special Operations I
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Examples
s = "a#b%*""ba"i s[i] Operation Current result 0 'a' Append 'a' "a" 1 '#' Duplicate result "aa" 2 'b' Append 'b' "aab" 3 '%' Reverse result "baa" 4 '*' Remove the last character "ba" Thus, the final result is "ba".
s = "z*#"""i s[i] Operation Current result 0 'z' Append 'z' "z" 1 '*' Remove the last character "" 2 '#' Duplicate the string "" Thus, the final result is "".
Constraints
1 <= s.length <= 20s consists of only lowercase English letters and special characters *, #, and %.How Interview Coder Helps with Leetcode Problems
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