timeConversion.js

/*
Given a time in 12-hour AM/PM format, convert it to military (24-hour) time.

Note: - 12:00:00AM on a 12-hour clock is 00:00:00 on a 24-hour clock.
- 12:00:00PM on a 12-hour clock is 12:00:00 on a 24-hour clock.

Example


Return '12:01:00'.


Return '00:01:00'.

Function Description

Complete the timeConversion function in the editor below. It should return a new string representing the input time in 24 hour format.

timeConversion has the following parameter(s):

string s: a time in  hour format
Returns

string: the time in  hour format
Input Format

A single string  that represents a time in -hour clock format (i.e.:  or ).

Constraints

All input times are valid
Sample Input 0

07:05:45PM
Sample Output 0

19:05:45
*/

'use strict';

const fs = require('fs');

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

let inputString = '';
let currentLine = 0;

process.stdin.on('data', function(inputStdin) {
    inputString += inputStdin;
});

process.stdin.on('end', function() {
    inputString = inputString.split('\n');

    main();
});

function readLine() {
    return inputString[currentLine++];
}

/*
 * Complete the 'timeConversion' function below.
 *
 * The function is expected to return a STRING.
 * The function accepts STRING s as parameter.
 */

function timeConversion(s) {
    // Write your code here
    
    // Split the time provided thru colon
    let [hours, minutes, seconds] = s.split(':')
    
    // Get the modifier besides seconds
    let modifier = seconds.slice(-2)
    
    // Update the seconds to only get the seconds
    seconds = seconds.slice(0, 2)
    
    if(modifier === 'PM'){
        if(hours != '12'){
            hours = parseInt(hours) + 12
        }else{
            hours = hours
        }
    }
    else if(modifier === 'AM'){
        if(hours === '12'){
            hours = '00'
        }
    }
    
    return `${hours}:${minutes}:${seconds}`

}

function main() {
    const ws = fs.createWriteStream(process.env.OUTPUT_PATH);

    const s = readLine();

    const result = timeConversion(s);

    ws.write(result + '\n');

    ws.end();
}