Time Conversion Solution in Kotlin — HackerRank

Problem 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.

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.

Output Format

Convert and print the given time 24 in -hour format, where 00 < hh < 23

Sample Input

07:05:45PM

Sample Output

19:05:45

ANSWER

fun timeConversion(s: String): String {
    /*
     * Write your code here.
     */
    val getZone = s.substring(8, 10)
    val getTime = s.substring(0, 8)
    val getHour = s.substring(0, 2)
    val getMinutes = s.substring(2, 8)
    var result: String
    if (getZone == "AM") {
        result = if (getHour == "12") "00$getMinutes" else getTime
    } else {
        var sum = getHour.toInt() + 12
        result = if (getHour == "12") getTime else "$sum$getMinutes"
    }
    return result
}