[해커랭크] Time Conversion

[해커랭크] Time Conversion

 

Given a time in -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  function with the following parameter(s):

• : a time in  hour format

Returns

• : 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

 

 

 

 

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

   

        int index = s.indexOf("M")-1;

        int hh = Integer.parseInt(s.split(":")[0]);

       

        if(s.charAt(index) =='P'){

            if(hh<12) hh += 12;

        }

        else{

            if(hh>=12) hh -= 12;

        }

       

        String converthh = String.format("%02d", hh);

        String dap = String.valueOf(converthh).concat(s.substring(2, 8));

        return dap;

    }

}

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();

    }

}