Day 7: Regular Expressions III | 10 Days Of JavaScript | HackerRank Solution

Hello coders, today we are going to solve Day 7: Regular Expressions III HackerRank Solution which is a part of 10 Days of JavaScript Series.

Task

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

Constraints

• The length of string s is =>3 .
• It’s guaranteed that string s contains at least one integer.

Output Format

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

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 s 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 s and pass the correct RegExp as our argument, it returns the following array of results: [ '1', '2', '3' ].

Solution – Day 7: Regular Expressions III

'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.
     */
    let re = /\d+/g;
    /*
     * Do not remove the return statement
     */
    return re;
}

function main() {
    const re = regexVar();
    const s = readLine();
    
    const r = s.match(re);
    
    for (const e of r) {
        console.log(e);
    }
}

Disclaimer: The above Problem (Regular Expressions III) is generated by Hacker Rank but the Solution is Provided by CodingBroz. This tutorial is only for Educational and Learning Purpose.