A string and a pattern are given to you. You have to match the pattern and string without using regular expression
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Severity: 8192
Message: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated
Filename: libraries/Filtered_db.php
Line Number: 23
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Match a string with a pattern is a problem of combination and we will solve this problem with the backtracking process.
To solve this problem, we will follow this algorithm,
C++ implementation:
Output
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