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  2. Regex
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Alien Username

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128 Discussions

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  • mohamedhari317
     + 0 comments
    import re
pattern=r"^[\.\_]{1}[0-9]{1,}[a-zA-Z]*[\_]?$"
for _ in range(int(input())):
    if re.match(pattern,input()):
        print("VALID")
    else:
        print("INVALID")

  • tongyou1995
     + 0 comments

    In Python 3:

    N = int(input())
alien_name = r'^(_|\.)[0-9]{1,}[a-zA-Z]{0,}(_)?$'
for _ in range(N):
    name = input()
    matched = re.match(alien_name, name)
    if bool(matched):
        print("VALID")
    else:
        print("INVALID")

  • trupti29
     + 0 comments

    import re n = int(input()) for _ in range(n): username = input() pattern = r'^[.]\d{1,}[a-zA-Z]*[]?$' if re.search(pattern,username): print("VALID") else: print("INVALID")

  • h1518528084
     + 0 comments

    TypeScript or JavaScript

    function main() {
    const regex = /^[_\.][0-9]+[a-zA-Z]*_?$/;
    for (let i = 1; i < inputLines.length; i++) {
        const str = inputLines[i];
        if (regex.test(str)) {
            console.info('VALID');
        } else {
            console.info('INVALID');
        }
    }
}

  • torobintu
     + 0 comments

    perl

    while(<>){
    chomp;
    next if $. == 1;
    /^[_\.]\d+[a-zA-Z]*_?$/ ? print "VALID\n" : print "INVALID\n";