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// $Id: matrix.java,v 1.3 2001/05/27 14:52:57 doug Exp $// http://www.bagley.org/~doug/shootout/// modified to use a little less memory by Thomas Holenstein//** This copy courtesy of http://www.kano.net/javabench///**  Added Timer() codeimport java.io.*;import java.util.*;public class matrix {    static int SIZE = 30;    public static void main(String args[]) {	int n = Integer.parseInt(args[0]);    long start = System.currentTimeMillis(); 	int m1[][] = mkmatrix(SIZE, SIZE);	int m2[][] = mkmatrix(SIZE, SIZE);	int mm[][] = new int[SIZE][SIZE];	for (int i=0; i<n; i++) {	    mmult(SIZE, SIZE, m1, m2, mm);	}	System.out.print(mm[0][0]);	System.out.print(" ");	System.out.print(mm[2][3]);	System.out.print(" ");	System.out.print(mm[3][2]);	System.out.print(" ");	System.out.println(mm[4][4]);    long end = System.currentTimeMillis();    System.out.println("Time: " + (end - start) + " ms");     }    public static int[][] mkmatrix (int rows, int cols) {	int count = 1;	int m[][] = new int[rows][cols];	for (int i=0; i<rows; i++) {	    for (int j=0; j<cols; j++) {		m[i][j] = count++;	    }	}	return(m);    }    public static void mmult (int rows, int cols, 	                      int[][] m1, int[][] m2, int[][] m3) {	for (int i=0; i<rows; i++) {	    for (int j=0; j<cols; j++) {		int val = 0;		for (int k=0; k<cols; k++) {		    val += m1[i][k] * m2[k][j];		}		m3[i][j] = val;	    }	}    }}