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  1. Prepare
  2. Algorithms
  3. Warmup
  4. Time Conversion
  5. Discussions

Time Conversion

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5163 Discussions

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  • fahadtuhin2
     + 0 comments

    string timeConversion(string s) { string hour = s.substr(0, 2); // starts from 0 and len = 2 string amPM = s.substr(8); // from 0 to the rest

    string result = "";
if (hour == "12") {
    result += (amPM == "PM") ? "12" : "00";
} else {
    result += (amPM == "PM") ? to_string(stoi(hour) + 12) : hour;
}

result += s.substr(2, 6); // starts from the index 2 and len = 6
return result;

    }

  • pkrbodade95
     + 0 comments

    Java 15

    int hour = Integer.parseInt(s.substring(0, 2));
     if (s.charAt(8) == 'P') {
         if (hour != 12)
             hour = (hour + 12) % 24;
     } else if (hour == 12)
         hour = (hour + 12) % 24;

     String hr = Integer.toString(hour);
     if (hr.length() == 1)
         hr = "0".concat(hr);

     return hr.concat(s.substring(2, 8));

  • aayuuhere
     + 0 comments

    Java Solution

    Using a boolen value to indicate the time am/pm.

    public static String timeConversion(String s) {
    // Write your code here
        StringBuilder finalTime = new StringBuilder("");
        boolean isPm = false;
        for(int i = 0 ; i < s.length() ; i++){
            finalTime.append(s.charAt(i));
            int secoundLastEle  = s.length()-2;
            if(s.charAt(secoundLastEle) == 'A'){
                isPm = false;
            }
            else {
                isPm = true; 
            }
        }
        
        finalTime.deleteCharAt(finalTime.length()-1); // last deletecharAt 
        finalTime.deleteCharAt(finalTime.length()-1); // secound last deletecharAt 
        
            
            String subSet = finalTime.substring(0,2);
            int convert_time = Integer.parseInt(subSet);
            
            if(isPm){
                if(convert_time != 12){
                    convert_time += 12;
                }
                String replace_convert_time = String.valueOf(convert_time);
                finalTime.replace(0,2,replace_convert_time);
            }
            else{
                if(subSet.equals("12")){
                    finalTime.replace(0,2,"00");
                }
            }
        
        return finalTime.toString();
    }

  • davidmorenorese1
     + 0 comments

    public static string timeConversion(string s) => DateTime.ParseExact(s, "hh:mm:sstt", CultureInfo.InvariantCulture).ToString("HH:mm:ss"); `

  • gauravmattu018
     + 0 comments

    from datetime import datetime def timeConversion(s):

    a = datetime.strptime(s, "%I:%M:%S%p")
return a.strftime("%H:%M:%S")

    if name == 'main':

    s = input()

result = timeConversion(s)
print(result)![](https://)