Rumus perkalian matriks
Disini saya
akan menjelaskan kodingan matrik perkalian didalam java, untuk lebih jelasnya
kita lihat kodingan di bawah ini :
Scanner
input=new Scanner(System.in);
int ordo,c,d;
System.out.print("masukkan ordo matriks
: ");
ordo=input.nextInt();
int
matriks1[][]=new int[ordo][ordo];
int
matriks2[][]=new int[ordo][ordo];
System.out.println("\n
matriks A");
for(c=0;c<matriks1.length;c++)
{
for(d=0;d<matriks1[c].length;d++)
{
System.out.print("elemen
matriks A pada baris ke "+(c+1)+" kolom ke "+(d+1)+" :
");
matriks1[c][d]=input.nextInt();
}
}
System.out.println("\n Output matriks A
: ");
for(c=0;c<matriks1.length;c++)
{
System.out.print("
[ ");
for(d=0;d<matriks1[c].length;d++)
{
System.out.print("
"+matriks1[c][d]);
}
System.out.println(" ] ");
}
System.out.println("\n matriks
B");
for(c=0;c<matriks1.length;c++)
{
for(d=0;d<matriks1[c].length;d++)
{
System.out.print("elemen
matriks B pada baris ke "+(c+1)+" kolom ke "+(d+1)+" :
");
matriks2[c][d]=input.nextInt();
}
}
System.out.println("\n
Output matriks B : ");
for(c=0;c<matriks1.length;c++)
{
System.out.print(" [
");
for(d=0;d<matriks1[c].length;d++)
{
System.out.print("
"+matriks2[c][d]);
}
System.out.println(" ] ");
}
System.out.println("\n Hasil Kali
Matriks A dengan matriks B : ");
int
matriksHasil[][]=hasilKaliMatriks(matriks1,matriks2);
cetakHasil(matriks1,matriks2,matriksHasil,'*');
}
public static int[][] hasilKaliMatriks(int [][]matriks1,int
[][]matriks2)
{
int hasil[][]=new
int[matriks1.length][matriks2[0].length];
for(int i=0;i<hasil.length;i++)
{
for(int
j=0;j<hasil[0].length;j++)
{
for(int
k=0;k<matriks1[0].length;k++)
{
hasil[i][j]+=matriks1[i][k]*matriks2[k][j];
}
}
}
return (hasil);
}
public static void cetakHasil(int matriks1[][],int
matriks2[][],int matriks3[][],char p)
{
for(int i=0;i<matriks1.length;i++)
{
for(int
j=0;j<matriks1[0].length;j++)
{
System.out.print(" "+matriks1[i][j]);
}
if(i==matriks1.length/2)
System.out.print(" "+p+" ");
else
System.out.print(" ");
for(int
j=0;j<matriks2[0].length;j++)
{
System.out.print(" "+matriks2[i][j])
;
}
if(i==matriks1.length/2)
System.out.print(" =");
else
System.out.print(" ");
for(int
j=0;j<matriks3[0].length;j++)
{
System.out.print(" "+matriks3[i][j]);
}
System.out.println();
}
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| Hasil output |
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