MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Which of the following languages have built in regexps support? Explanation: Many languages come with built in support of regexps like Perl, Javascript, Ruby etc. While some provide support using standard libraries like . NET, Java, Python, C++, C and POSIX.

Detailed explanation-2: -Python supports essentially the same regular expression syntax as Perl, as far as the regular expressions themselves. However, the syntax for using regular expressions is substantially different. Regular expression support is not available out of the box; you must import the re module.

Detailed explanation-3: -Regular expressions are patterns used to match character combinations in strings. In JavaScript, regular expressions are also objects. These patterns are used with the exec() and test() methods of RegExp, and with the match(), matchAll(), replace(), replaceAll(), search(), and split() methods of String .

Detailed explanation-4: -A RegEx, or Regular Expression, is a sequence of characters that forms a search pattern. RegEx can be used to check if a string contains the specified search pattern.

Detailed explanation-5: -In C#, Regular Expression is used for the parsing and validation of the given text to match with the defined pattern (for example, an email address). The pattern can contain operators, characters literals, or constructs. To process the text with the regular Expression in .