public class operation {

public void add(int ar1[],int ar2[]){
int largeSize = (ar1.length>ar2.length) ? ar1.length : ar2.length;
	int smallSizeIfNotEqual = (ar1.length<ar2.length) ? ar1.length : ar2.length;
	int [] result = new int[largeSize];
	int c=0;

	for(int i=0;i<smallSizeIfNotEqual;i++){
		  int tmpResult=(ar1[i]+ar2[i])+c;
                  c=0;
			 if(tmpResult <10)
				  result[i]= tmpResult;
			  else{
					result[i]=tmpResult%10;
					c=tmpResult/10;
			  }
	}
	if(ar1.length>ar2.length){
	    for(int i=ar2.length;i<ar1.length;i++){
		    int tmpResult=(ar1[i])+c;
                    c=0;
			 if(tmpResult <10)
       			  result[i]= tmpResult;
			  else{
                		result[i]=tmpResult%10;
				c=tmpResult/10;
                	  }

	    }
	}else if(ar2.length>ar1.length){
	    for(int i=ar1.length;i<ar2.length;i++){
		    int tmpResult=(ar2[i])+c;
                    c=0;
			 if(tmpResult <10)
				  result[i]= tmpResult;
			  else{
					result[i]=tmpResult%10;
					c=tmpResult/10;
			  }
	    }
	}
	System.out.println(" ");
        for (int i=largeSize-1;i>=0;i--)
            System.out.print(" "+result[i]);
}


public void mul(int ar1[],int ar2[]){
	int largeSize = (ar1.length>ar2.length) ? ar1.length : ar2.length;
	int smallSizeIfNotEqual = (ar1.length<ar2.length) ? ar1.length : ar2.length;
	int [] result = new int[largeSize];
	int c=0;

	for(int i=0;i<smallSizeIfNotEqual;i++){
		  int tmpResult=(ar1[i]*ar2[i])+c;
                  c=0;
			 if(tmpResult <10)
				  result[i]= tmpResult;
			  else{
					result[i]=tmpResult%10;
					c=tmpResult/10;
			  }
	}
	if(ar1.length>ar2.length){
	    for(int i=ar2.length;i<ar1.length;i++){
		    int tmpResult=(ar1[i])+c;
                    c=0;
			 if(tmpResult <10)
       			  result[i]= tmpResult;
			  else{
                		result[i]=tmpResult%10;
				c=tmpResult/10;
                	  }

	    }
	}else if(ar2.length>ar1.length){
	    for(int i=ar1.length;i<ar2.length;i++){
		    int tmpResult=(ar2[i])+c;
                    c=0;
			 if(tmpResult <10)
				  result[i]= tmpResult;
			  else{
					result[i]=tmpResult%10;
					c=tmpResult/10;
			  }
	    }
	}
	System.out.println(" ");
        for (int i=largeSize-0;i>=0;i--)
            System.out.print(" "+result[i]);

	}


public void sub(int ar1[],int ar2[]){
		int results []= new int[ar1.length];
                for(int k=0;k<ar1.length;k++){
                    if((ar1[k]-ar2[k])>=0){
                        results[k]=ar1[k]-ar2[k];
                    }else if((ar1[k]-ar2[k])<0){
                        if(k+1<ar1.length){
                        ar1[k+1]--;
                        results[k]=10+ar1[k]-ar2[k];
                        }else{
                        results[k]=ar1[k]-ar2[k];
                        }
		    }
                 }
		System.out.println(" ");
		for (int i=results.length-1;i>=0;i--){
			System.out.print(" "+results[i]);}

	}
}