Time Conversion

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

Note: Midnight is 12:00:00AM on a 12-hour clock, and 00:00:00 on a 24-hour clock. Noon is 12:00:00PM on a 12-hour clock, and 12:00:00 on a 24-hour clock.

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):

• s: a string representing time in 12 hour format

Input Format

A single string s containing a time in 12-hour clock format (i.e.: hh:mm:ssAM or hh:mm:ssPM), where 01 <= hh <= 12 and 00 <= mm,ss <= 59.

Constraints

• All input times are valid

Output Format

Convert and print the given time in 24-hour format, where 0 <= hh <= 23.

Sample Input 0

1

07:05:45PM

Sample Output 0

1

19:05:45

Solution

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/*
 * Complete the timeConversion function below.
 */
function timeConversion(s) {
    /*
     * Write your code here.
     */
    return (s || '').split(':').reduce((target, item, index) => {
        item = !index
            ?
            ((s || '').includes('PM')
                ? (+item < 12 ? `${+item + 12}` : item)
                : (+item < 12 ? item : '00')
            )
            :
            item.replace(/PM|AM/gi, '');

        target.push(item);

        return target;
    }, []).join(':');
}