Time-Conversion/Solution.java

 

import java.io.*;
	import java.math.*;
	import java.security.*;
	import java.text.*;
	import java.util.*;
	import java.util.concurrent.*;
	import java.util.function.*;
	import java.util.regex.*;
	import java.util.stream.*;
	import static java.util.stream.Collectors.joining;
	import static java.util.stream.Collectors.toList;
	class Result {
	/*
	* Complete the 'timeConversion' function below.
	*
	* The function is expected to return a STRING.
	* The function accepts STRING s as parameter.
	*/
	public static String timeConversion(String s) {
	// Write your code here
	String hour = s.substring(0,2);
	String rest = s.substring(3,8);
	String amOrPm = s.substring(8);
	String newHour = hour;
	if(amOrPm.equals("AM") && Integer.valueOf(hour) == 12)
	newHour = "00";
	else if(amOrPm.equals("PM") && Integer.valueOf(hour) != 12)
	newHour = String.valueOf(12 + Integer.valueOf(hour));
	return newHour + ":" + rest;
	}
	}
	public class Solution {
	public static void main(String[] args) throws IOException {
	BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
	BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));
	String s = bufferedReader.readLine();
	String result = Result.timeConversion(s);
	bufferedWriter.write(result);
	bufferedWriter.newLine();
	bufferedReader.close();
	bufferedWriter.close();
	}
	}