LA4 Matif 2 (Invers pada Matrik) Tanggal 9 April 2011

Listing

import java.io.*;
class invers
{
     public static void main (String[]args) throws Exception
     {
          BufferedReader input = new BufferedReader (new InputStreamReader(System.in));
          System.out.println("");
          System.out.println("=======INVERS=======");
          System.out.println("Ordo Matriks = 2 x 2");
          int [][]matrika = new int[2][2];
          System.out.println("Masukan Elemen Matriksnya:");
          for(int i=0;i<2;i++)
         {
              for(int j=0;j<2;j++)
              {
                   System.out.print("Elemen ["+(i+1)+","+(j+1)+"]: ");
                   matrika[i][j]=Integer.parseInt(input.readLine());
              }
          }
          System.out.println("");
          System.out.println("Matriknya: ");
          for(int i=0;i<2;i++)
         {
              System.out.print("|");
              for(int j=0;j<2;j++)
              {
                    System.out.print(" "+matrika[i][j]+" ");
               }
               System.out.println("|");
          }
          System.out.println("");
          float dtr=(matrika[1][1]*matrika[0][0])-(matrika[1][0]*matrika[0][1]);
          System.out.println("Determinannya: "+dtr);
          int temp=matrika[0][0];
          matrika[0][0]=matrika[1][1];
          matrika[1][1]=temp;
          matrika[0][1]=matrika[0][1]*-1;
          matrika[1][0]= matrika[1][0]*-1;
          System.out.println("");
          System.out.println("Adjointnya: ");
          for(int i=0;i<2;i++)
          {
              System.out.print("|");
              for(int j=0;j<2;j++)
              {
                   System.out.print(" "+matrika[i][j]+" ");
               }
               System.out.println("|");
           }
           System.out.println("");
           System.out.println("Matrik Inversnya: ");
           for(int i=0;i<2;i++)
           {
                System.out.print("|");
                for(int j=0;j<2;j++)
                {
                     System.out.print(" "+matrika[i][j]*(1/dtr)+" ");
                }
                System.out.println("|");
           }
           System.out.println("");
      }
}

Output