Solution: Append Characters to String to Make Subsequence
Explore how to determine the minimum characters to append to a source string so that a target becomes its subsequence by using a greedy two pointers method. Understand the efficient traversal of both strings to identify matching sequences and reduce unnecessary additions, with clear insights on time and space complexity.
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Statement
You’re given two strings, source and target, made up of lowercase English letters. Your task is to determine the minimum number of characters that must be appended to the end of the source so that the target becomes a subsequence of the resulting string.
Note: A subsequence is formed by deleting zero or more characters from a string without changing the order of the remaining characters.
Constraints: ...