Problem: Append Characters to String to Make Subsequence
Explore how to calculate the minimum number of characters to append to one string to make another string its subsequence. Understand the two-pointer greedy method to solve this problem with linear time complexity, improving your skills in string manipulation and algorithm optimization in C++.
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Statement
You are given two strings s and t, both composed entirely of lowercase English letters.
A subsequence of a string is a sequence of characters obtained by deleting zero or more characters from the string without changing the relative order of the remaining characters.
Determine the minimum number of characters that must be appended to the end of s so that t becomes a subsequence of s.
Constraints:
s.length,t.length...