En matrismultiplikationsflärp

MMult.java

class MMult {
  public static int[][] mult(int[][] a, int[][] b) {
    int rows = a.length;
    int elements = a[0].length;
    int columns = b[0].length;
    int[][] results = new int[rows][columns]; 
    for (int n = 0; n < rows; n++) {
      for (int m = 0; m < rows; m++) {
        for (int i = 0; i < elements; i++) {
          results[n][m] += a[n][i]*b[i][m];
        }
      }
    }
    return results;
  }
  
  public static void main(String[] args) {
    int[][] a = {{1,2,3},{4,5,6}};
    int[][] b = {{1,2},{3,4},{5,6}};
    
    int[][] c = MMult.mult(a,b);
    
    for(int[] x : c) {
      String out = "";
      for(int y : x) {
        out += y + " ";
      }
      System.out.println(out);
    }
  }
}