//Language = C++ //Approach

Extract the A or P from the given time string. A and P lies at second last index of string. string.size() - 2. Remove AM/PM from the given string.

If the time is given in AM (Then only 12 AM will need to be addressed)

If time is given in PM - Then there are two cases: i. When time is from 01 PM - 11 PM (Simply add 12 in the hrs) ii. When time is 12 PM (Skip this time as it is already in 24 hrs format)

string timeConversion(string s) { int n = s.size(); bool isAM = (s.substr(n - 2, 1) == "A") ? true : false; s = s.substr(0, n-2);

if(isAM){
    if(s[1] == '2'){
        s[0] = '0';
        s[1] = '0';
    }
} else{
    //Time from 10 PM - 12 PM
    if(s[0] - '0'){
        //12 PM
        if(s[1] - '0' < 2){
            string hrs = to_string((s[1] - '0') + 10 + 12);
            s[0] = hrs[0];
            s[1] = hrs[1];
        }
    } else{
        //Time from 01 PM - 09 PM
        string hrs = to_string((s[1] - '0') + 12);
        s[0] = hrs[0];
        s[1] = hrs[1];
    }

}
return s.substr();

}

Split the time and AM/PM into two variables initally. Foucus on implementing logic to handle the two examples that are provided!

java

if(s.charAt(8)=='A'){
        if(Integer.parseInt(s.substring(0,2))==12){
            return "00"+s.substring(2,8);
        }
        return s.substring(0, 8);
    }else{
        if(Integer.parseInt(s.substring(0,2))==12){
            return "12"+s.substring(2,8);
        }
        return (12+Integer.parseInt(s.substring(0,2))+s.substring(2,8));
    }

My code of JS/TS

function timeConversion(s: string): string { // 07:05:45PM
    const isPM = s.endsWith('PM')
    let hh = Number(s.slice(0,2))
    
    if (isPM && hh < 12) { // handle 0-11 hour in PM 
        hh = hh + 12
    } else if (!isPM && hh === 12) { // handle AM hh === 12 cases
        hh = 0
    } 
    const retrunTime = (hh <= 9 ? '0' : '') + hh.toString() + s.slice(2,8) // 19:05:45
    return retrunTime
}

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 kotlin.collections.* import kotlin.comparisons.* import kotlin.io.* import kotlin.jvm.* import kotlin.jvm.functions.* import kotlin.jvm.internal.* import kotlin.ranges.* import kotlin.sequences.* import kotlin.text.*

/* * Complete the 'timeConversion' function below. * * The function is expected to return a STRING. * The function accepts STRING s as parameter. */

fun timeConversion(s: String): String { var ret ="" // Write your code here if(s.contains("PM")){ var time = s.split(":")

      var cal = time[0].toInt()
      if(cal<12){
        cal = cal+12
      }

      var calctime = cal.toString()+":"+time[1]+":"+time[2]
        var calctimewithoutPm = calctime.split("PM")
ret = calctimewithoutPm[0].toString()

} else{ var timeWithoutAm = s.split("AM") var cal =timeWithoutAm[0] var time =cal.toString().split(":") var zero = time[0] if(time[0].toInt()>=12){ zero = ((zero.toInt())-12).toString() if(zero.toInt()==0){ zero="00" } }

  var calctime = zero.toString()+":"+time[1]+":"+time[2]
       // var calctimewithoutPm = calctime.split("PM")
        ret = calctime

} return ret }

fun main(args: Array) { val s = readLine()!!

val result = timeConversion(s)

println(result)

}