Programm zum Konvertieren der Uhrzeit vom 12-Stunden- in das 24-Stunden-Format
Konvertieren Sie eine gegebene Zeit im 12-Stunden-AM/PM-Format in die Militärzeit (24 Stunden).
Hinweis: Mitternacht ist 00:00:00 auf einer 12-Stunden-Uhr und 00:00:00 auf einer 24-Stunden-Uhr. Mittag ist 12:00:00 auf der 12-Stunden-Uhr und 12:00:00 auf der 24-Stunden-Uhr
Beispiele:
Input : A single string containing a time in 12-hour
clock format(hh:mm:ss AM or hh:mm:ss PM
where 01 <= hh <= 12 or 01 <= mm,ss <= 59
Output :Convert and print the given time in 24-hour format,
where 00 <= hh <= 23
Input : 07:05:45PM
Output : 19:05:45
C++
// C++ program to convert 12 hour to 24 hour
// format
#include<iostream>
using namespace std;
void print24(string str)
{
// Get hours
int h1 = (int)str[1] - '0';
int h2 = (int)str[0] - '0';
int hh = (h2 * 10 + h1 % 10);
// If time is in "AM"
if (str[8] == 'A')
{
if (hh == 12)
{
cout << "00";
for (int i=2; i <= 7; i++)
cout << str[i];
}
else
{
for (int i=0; i <= 7; i++)
cout << str[i];
}
}
// If time is in "PM"
else
{
if (hh == 12)
{
cout << "12";
for (int i=2; i <= 7; i++)
cout << str[i];
}
else
{
hh = hh + 12;
cout << hh;
for (int i=2; i <= 7; i++)
cout << str[i];
}
}
}
// Driver code
int main()
{
string str = "07:05:45PM";
print24(str);
return 0;
}
Java
// Java program to convert 12 hour
// format to 24 hour format
class GFG
{
static void print24(String str)
{
// Get hours
int h1 = (int)str.charAt(1) - '0';
int h2 = (int)str.charAt(0) - '0';
int hh = (h2 * 10 + h1 % 10);
// If time is in "AM"
if (str.charAt(8) == 'A')
{
if (hh == 12)
{
System.out.print("00");
for (int i = 2; i <= 7; i++)
System.out.print(str.charAt(i));
}
else
{
for (int i = 0; i <= 7; i++)
System.out.print(str.charAt(i));
}
}
// If time is in "PM"
else
{
if (hh == 12)
{
System.out.print("12");
for (int i = 2; i <= 7; i++)
System.out.print(str.charAt(i));
}
else
{
hh = hh + 12;
System.out.print(hh);
for (int i = 2; i <= 7; i++)
System.out.print(str.charAt(i));
}
}
}
// Driver code
public static void main (String[] args)
{
String str = "07:05:45PM";
print24(str);
}
}
// This code is contributed by Anant Agarwal.
Python3
# Python3 program to convert 12
# hour to 24 hour format
def print24(s):
# Get hours
h1 = ord(s[1]) - ord('0')
h2 = ord(s[0]) - ord('0')
hh = (h2 * 10 + h1 % 10)
# If time is in "AM"
if (s[8] == 'A'):
if (hh == 12):
print('00', end = '')
for i in range(2, 8):
print(s[i], end = '')
else:
for i in range(0, 8):
print(s[i], end = '')
# If time is in "PM"
else:
if (hh == 12):
print("12", end = '')
for i in range(2, 8):
print(s[i], end = '')
else:
hh = hh + 12;
print(hh, end = '')
for i in range(2, 8):
print(s[i], end = '')
# Driver code
if __name__=="__main__":
s = "07:05:45PM"
print24(s)
# This code is contributed by rutvik_56
C#
// C# program to convert 12 hour
// format to 24 hour format
using System;
class GFG
{
static void print24(String str)
{
// Get hours
int h1 = (int)str[1] - '0';
int h2 = (int)str[0] - '0';
int hh = (h2 * 10 + h1 % 10);
// If time is in "AM"
if (str[8] == 'A')
{
if (hh == 12)
{
Console.Write("00");
for (int i = 2; i <= 7; i++)
Console.Write(str[i]);
}
else
{
for (int i = 0; i <= 7; i++)
Console.Write(str[i]);
}
}
// If time is in "PM"
else
{
if (hh == 12)
{
Console.Write("12");
for (int i = 2; i <= 7; i++)
Console.Write(str[i]);
}
else
{
hh = hh + 12;
Console.Write(hh);
for (int i = 2; i <= 7; i++)
Console.Write(str[i]);
}
}
}
// Driver code
public static void Main(String[] args)
{
String str = "07:05:45PM";
print24(str);
}
}
// This code is contributed by Rajput-Ji
Javascript
<script>
// javascript program to convert 12 hour
// format to 24 hour format
function print24(str)
{
// Get hours
var h1 = Number(str[1] - '0');
var h2 = Number(str[0] - '0');
var hh = (h2 * 10 + h1 % 10);
// If time is in "AM"
if (str[8] == 'A')
{
if (hh == 12)
{
document.write("00");
for (var i = 2; i <= 7; i++)
document.write(str[i]);
}
else
{
for (var i = 0; i <= 7; i++)
document.write(str[i]);
}
}
// If time is in "PM"
else
{
if (hh == 12)
{
document.write("12");
for (var i = 2; i <= 7; i++)
document.write(str[i]);
}
else
{
hh = hh + 12;
document.write(hh);
for (var i = 2; i <= 7; i++)
document.write(str[i]);
}
}
}
// Driver code
var str = "07:05:45PM";
print24(str);
// This code is contributed by bunnyram19.
</script>
Ausgabe:
19:05:45
Methode 2: Java-Datum verwenden
Java
// Java program for the above approach
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
class GFG {
public static String englishTime(String input)
throws ParseException
{
// Format of the date defined in the input String
DateFormat dateFormat
= new SimpleDateFormat("hh:mm:ss aa");
// Change the pattern into 24 hour format
DateFormat formate
= new SimpleDateFormat("HH:mm:ss");
Date time = null;
String output = "";
// Converting the input String to Date
time = dateFormat.parse(input);
// Changing the format of date
// and storing it in
// String
output = formate.format(time);
return output;
}
// Driver Code
public static void main(String[] arg)
throws ParseException
{
System.out.println(englishTime("07:05:45 PM"));
}
}
Ausgabe:
19:05:45
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