Web Reference: Join over 28 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Regular Expression Matching - Given an input string s and a pattern p, implement regular expression matching with support for '.' and '*' where: * '.' Matches any single character. Regular expressions are an amazingly powerful tool for describing collections of strings. However, they can take some time to get used to and represent a totally different problem-solving strategy than the techniques for designing automata.
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