数组按行/列优先存储转换

package com。wrh.lab.dataStructure.arrayAndGenericTable;

/**
 * test the array convert 
 * @author wrh
 *
 */
public class ArrayConvert {
    public static void main(String[] args) {
        int[][] data = {{1,2,3,4},{5,6,7,8},{9,10,11,12}};
        int[] rowData = new int[12];
        int[] colData = new int[12];
        int i,j;
        
        System.out.println("Out put the two dimension array:");
        for (i = 0; i < 3; i++) {
            for (j = 0; j < 4; j++) {
                System.out.print(" " + data[i][j] + " ");
            }
            System.out.println();
        }
        
        System.out.println("*********convert to row first store");
        for (i = 0; i < 3; i++) {
            for (j = 0; j < 4; j++) {
                rowData[i * 4 + j] = data[i][j];
            }
        }
        for(i = 0; i < rowData.length; i++) {
            System.out.print(" " + rowData[i] + " ");
        }
        System.out.println();
        
        System.out.println("******convert to column first store");
            for (i = 0; i < 3; i++) {
                for (j = 0; j < 4; j++) {
                colData[j * 3 + i] = data[i][j];
            }
        }
        for (i = 0; i < 12; i++) {
            System.out.print(" " + colData[i] + " ");
        }
        
    }
}