Inmultirea numerelor mari in java

[•rosper]

Am si eu o problema cu inmultirea unor numere mari in java,fara a folosi clasa BigInteger sau BigDecimal am facut o clasa asemanatoare si problema e ca la inmultire nu imi vede ultima valoare...aici sunt functiile :

Cod:

public static int[] add(int x[],int y[],int p)
		{
		 int i,dep=0;
		 int[]m=new int[p+2];
		 for(i=p-1;i>=0;i--)
			 {
				 m[i+1]=(x[i]+y[i])%10+dep;
			 	 if ((x[i]+y[i])>9) dep=1;
			 	 else dep=0;
			 }
		if(dep==1) m[0]=1;
		else m[0]=0;
		return m;
		 
		}
si 

public static int[] inmultire(int x[],int y[],int n)
	{
		int [] z=new int [n+n+2];
		int i,j,dep=0;
		int nr[] = null;
		for(i=n-1;i>=0;i--)
		{
			for(int k=0;k<n+n+2;k++)
				z[k]=0;
			for(j=n-1;j>=0;j--)
			{
					z[(n+j)-(n-1-i)+2]=(x[i]*y[j]+dep)%10;
					dep=(x[i]*y[j]+dep)/10;
			}
			System.out.println("Numarul z este:");
			for(int k=0;k<n+n+2;k++)
				System.out.print(z[k]);
			z[(n+j)-(n-1-i)+2]=dep;
			if(i==n-1)
			{
			nr=add(zero(z, n+n+1),z,n+n+1);
			}
			else nr=add(nr,z,n+n+1);
			System.out.println("Numarul in momentul actual este:");
			for(int k=0;k<n+n+2;k++)
				System.out.print(nr[k]);
			System.out.println();
			dep=0;
		}
		return nr;
	}

astept orice idee ms

Editat de admin: Foloseste tagul "code" cand postezi cod.