Time Conversion Solution in Java | HackerRank | Time Conversion HackerRank Solution

Time Conversion Solution in Java
Time Conversion HackerRank Solution in Java

Problem:

Given a time in -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 hour format

Input Format

A single string containing a time in -hour clock format (i.e.: or ), where and .

Constraints

All input times are valid

Output Format

Convert and print the given time in -hour format, where .

Sample Input 0

07:05:45PM

Sample Output 0

19:05:45

https://www.hackerrank.com/challenges/time-conversion/problem

Time Conversion HackerRank Solution in Java
Time Conversion Solution in Java


import java.io.*;
import java.math.*;
import java.text.*;
import java.util.*;
import java.util.regex.*;
public class Solution {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        String time = input.nextLine();
        int hour = Integer.parseInt(time.substring(0,2));
        int minute = Integer.parseInt(time.substring(3,5));
        int second = Integer.parseInt(time.substring(6,8));
        String s = time.substring(8,10);
        hour += ((s.equals("PM") && hour != 12)?12:0);
        hour -= ((s.equals("AM") && hour == 12)?12:0);
        System.out.println(String.format("%02d",hour) + ":" + String.format("%02d",minute) + ":" + String.format("%02d",second));
    }
}

Time Conversion Solution in Java | HackerRank | Time Conversion HackerRank Solution