Day 7: Regular Expressions III : 10 Days Of Javascript HackerRank Solution

Problem:-

Task

Complete the function in the editor below by returning a RegExp object, , that matches every integer in some string .

Constraints

• The length of string  is  .
• It's guaranteed that string  contains at least one integer.

Output Format

The function must return a RegExp object that matches every integer in some string .

Sample Input 0

102, 1948948 and 1.3 and 4.5

Sample Output 0

102
1948948
1
3
4
5

Explanation 0

When we call match on string  and pass the correct RegExp as our argument, it returns the following array of results: [ '102', '1948948', '1', '3', '4', '5' ].

Sample Input 1

1 2 3

Sample Output 1

1
2
3

Explanation 1

When we call match on string  and pass the correct RegExp as our argument, it returns the following array of results: [ '1', '2', '3' ].

Solution:-

'use strict';

process.stdin.resume();

process.stdin.setEncoding('utf-8');

let inputString = '';

let currentLine = 0;

process.stdin.on('data', inputStdin => {

inputString += inputStdin;

});

process.stdin.on('end', _ => {

inputString = inputString.trim().split('\n').map(string => {

return string.trim();

});

main();

});

function readLine() {

return inputString[currentLine++];

}

function regexVar() {

/*

* Declare a RegExp object variable named 're'

* It must match ALL occurrences of numbers in a string.

*/

/*

* Do not remove the return statement

*/

let re = /\d+/g;

return re;

}

function main() {

const re = regexVar();

const s = readLine();

const r = s.match(re);

for (const e of r) {

console.log(e);

}

}