How to return Time using a 2-D array (Java)? -

edit:

unfortunately dont know how implement return statement. problem (mpfp book 2005)

this program designed add time onto time. e.g. add 1 hour , 40 minutes 2:20 ~ gives 4:00 using conventional 2-d array stores new time.

my issue not know how append integers 'newminutes' , 'newhours' onto 2-d array return in standard time form.

public class addingtime {      private static int [] [] nativeclockadd (int oldhours,int oldminutes,int addhours,int addminutes)     {         int newminutes = 0, newhours = 0;          int[][] time = new int [newminutes] [newhours]; // return time.          newminutes = oldminutes + addminutes;      while (newminutes > 60) // subtract 60 minutes, add hour     {     newminutes -= 60;     addhours += 1;     }     newhours = oldhours + addhours;      while (newhours > 12)     {     newhours -= 12;      }        return time;     }      public static void main(string[] args) {         system.out.println (nativeclockadd(4,5,7,8));      } } 

while (newminutes > 60) // subtract 60 minutes, add hour {     newminutes -= 60;     addhours += 1; } newhours = oldhours + addhours;  while (newhours > 12) {     newhours -= 12;  } 

this not @ all. read on modulus operator. loops can done in handful of lines.

newminutes = oldminutes + addminutes;           //add minutes newhours = oldhours + addhours + newminutes/60; //int truncation ok, 61/60 = 1 newhours = newhours % 12; //convert 12hr format if(newhours == 0) { //12 % 12 0, set 12 if that's case     newhours = 12; } 

if want more easily, create class time pair of integers hours , minutes. can return object rather weird int[2].

class mytime {     private int minutes;     private int hours;     //make public if think you'll need it.     private mytime(int h, int m) {        this.hours = h;        this.minutes = m;     }      public int getminutes() { return minutes; }     public int gethours() { return hours; }      public static mytime addtime(int h, int m, int elapsedhours, int elapsedminutes) {         m += elapsedminutes;         //add minutes         h += elapsedhours + (m/60);  //add hours + possible hour minutes. integer truncation here good. 61/60 = 1         m = m%60;                    //get rid of excess minutes. 60 becomes 0, 61 becomes 1, etc...         return new mytime(h, m);     }      //i'm not sure if compile.     /*     public static int[2] addtimeweird(int h, int m, int elapsedhours, int elapsedminutes) {         mytime mytime = addtime(h, m, elapsedhours, elapsedminutes);         int time[] = new int[2];         time[0] = mytime.gethours();         time[1] = mytime.getminutes();         return time;     }     */ }