how to return the value when the match is a subpattern?

Any questions involving matching text strings to patterns - the pattern is called a "regular expression."

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bob2008
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how to return the value when the match is a subpattern?

Post by bob2008 »

The Knuth–Morris–Pratt string searching algorithm searches for occurrences of a "word" W within a main "text string" S by employing the observation that when a mismatch occurs, the word itself embodies sufficient information to determine where the next match could begin, thus bypassing re-examination of previously matched characters.
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