随笔档案(496)

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/**
* @(#)DelColOfMatrix.java
*
* @author JAdmin
* @version 1.00 2007/8/22
*
*/

import java.util.Scanner;

public class DelColOfMatrix
{
public static void main(String[] args)
{
    int row, col;
    Scanner sr = new Scanner(System.in);
    System.out.println("请输入矩阵相关参数：");
    System.out.print("row=");
    row = sr.nextInt();
    System.out.print("col=");
    col = sr.nextInt();

    int[][] array = new int[row][col];
    System.out.println("输入矩阵各元素：");
    for (int i = 0; i < array.length; i++)
     for (int j = 0; j < array[0].length; j++)
      array[i][j] = sr.nextInt();
    System.out.println("============The Matrix is============");
    display(array);
    System.out.println("请输入要删除的矩阵列序号");
    System.out.print("delColNum=");
    int delColNum = sr.nextInt();

    int[][] newarr = delCol(array, delColNum);
    System.out
      .println("============The Matrix after Delete is============");
    display(newarr);

}

private static void display(int[][] arr)
{
    for (int i = 0; i < arr.length; i++)
    {
     for (int j = 0; j < arr[0].length; j++)
      System.out.print(arr[i][j] + " ");
     System.out.println();
    }
}

private static int[][] delCol(int[][] arr, int delColNum)
{
    int[][] tmparr = new int[arr.length][(arr[0].length - 1)];
    for (int i = 0; i < arr.length; i++)
    {
     for (int j = delColNum - 1; j < arr[0].length - 1; j++)
      arr[i][j] = arr[i][j + 1];
     for (int k = 0; k < tmparr[0].length; k++)
      tmparr[i][k] = arr[i][k];
    }
    return tmparr;

}

}