# Hacker Rank Time Conversion problem solution Easiest

Hacker Rank Time Conversion problem solution Easiest

In  this HackerRank Time Conversion problem solution, you have given a time in 12 hour AM/PM format, you need to convert it to military (24-hour) time.

Example

• s = ’12:01:00PM’
Return ’12:01:00′.
• s = ’12:01:00AM’
Return ’00:01:00′.

## Hacker Rank Time Conversion problem solution:

### Problem solution in Java programming:

```public static String timeConversion(String s) {
// Write your code here
//String temp = s;
int hour=Integer.valueOf(s.substring(0, 2));
if(s.substring(s.length()-2, s.length()).equalsIgnoreCase("AM")){
hour=hour%12;
}else{
hour=(hour%12)+12;
}

if(hour<10){
return "0".concat(String.valueOf(hour).concat(s.substring(2, s.length()-2)));
}else{
return String.valueOf(hour).concat(s.substring(2, s.length()-2));
}
```

### Problem solution in Python programming:

```def timeConversion(s):
a = (s[0]+ s[1])
new_s = s[:-2]
if s[-2] == "A":
if a == "12":
new_s = "00" + (new_s[2:])
return (new_s)
return new_s
else:
if a == "12":
return new_s
a1 = int(a) + 12
new_s = (str(a1) + (new_s[2:]))
return (new_s)
```

### Problem solution in C programming:

```char* timeConversion(char* s) {

int i = 0;
int hms[3] = {0};
char apm[2] = {0};
char *result = NULL;
char *token = NULL;

result = (char *)malloc(9);
memset(result, 0, 9);

strncpy(apm, &s[8], 2);
memset(&s[8], 0, 2);

token = strtok(s, ":");
while (token != NULL) {
hms[i] = atoi(token);
token = strtok(NULL, ":");
i++;
}

if(!strncmp(apm, "PM", 2))
{
if(hms[0] != 12)
{
hms[0] += 12;
}
}
else if(!strncmp(apm, "AM", 2))
{
if(hms[0] == 12)
hms[0] = 0;
}

sprintf(result, "%02d:%02d:%02d", hms[0],hms[1],hms[2]);

return result;
}
```

### Problem solution in C# programming:

```public static string timeConversion(string s)
{

DateTime dt=Convert.ToDateTime(s);

return   dt.ToString("HH:mm:ss");

}
```