java第四次作业

package nnn1;

import java.util.Arrays;
import java.util.Scanner;
public class nnn1 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		int xLen = 3;
        int yLen = 3;
        int[][] a = new int[xLen][yLen];
        //使用随机数填充二维数组
        for(int i=0;i<xLen;i++) {
            for(int j=0;j<yLen;j++) {
                a[i][j] = (int)(Math.random() * 100);
            }
        }
        //复制二维数组到一维数组
        int[] b = new int[xLen * yLen];
        int k = 0;
        for(int i=0;i<xLen;i++) {
            for(int j=0;j<yLen;j++) {
                b[k++] = a[i][j];
            }
        }
        System.out.println("排序前:");
        for(int i=0;i<xLen;i++) {
            System.out.println(Arrays.toString(a[i]));
        }
        //调用Arrays中的sort方法
        Arrays.sort(b);
        //将排序后的值复制回二维数组
        k = 0;
        for(int i=0;i<xLen;i++) {
            for(int j=0;j<yLen;j++) {
                a[i][j] = b[k++];
            }
        }
        System.out.println("排序后:");
        for(int i=0;i<xLen;i++) {
            System.out.println(Arrays.toString(a[i]));

        }
	}

}

import java.util.Scanner;
 
public class test10 {
 
 public static void main(String[] args) {
  System.out.println("您想调取第几位学生的答题结果（有效数字为1~8）：");
  Scanner sc=new Scanner(System.in);
  int a=sc.nextInt();
  System.out.print("第"+a+"位同学的全部答案为：");
  int sum=0;
  char score[][]=new char[8][10];
  char arr[]=new char[]{'B','A','D','C','C','B','C','A','D','B'};
  score[0]=new char[]{'A','B','C','D','A','C','B','D','A','D'};
  score[1]=new char[]{'B','A','D','B','A','B','B','A','C','B'};
  score[2]=new char[]{'B','A','D','B','A','B','C','A','C','B'};
  score[3]=new char[]{'A','B','C','D','A','C','B','D','A','D'};
  score[4]=new char[]{'A','B','C','D','A','C','B','D','A','D'};
  score[5]=new char[]{'A','B','C','D','A','C','B','D','A','D'};
  score[6]=new char[]{'A','B','C','D','A','C','B','D','A','D'};
  score[7]=new char[]{'A','B','C','D','A','C','B','D','A','D'};
  
   System.out.print(score[a]);
   for (int i = 0; i < 10; i++)
   {
       if (arr[i] == score[2][i]){
        
           sum++;
          
           
           }
     
      
          //B A D BA B C A C B
           //B B C D A C B D A D
       }
    System.out.println();
          System.out.println("第"+a+"位同学一共答对了"+sum+"道题");
       }
 }
 

标签：java,int,作业,System,char,score,new,out,第四次
来源： https://blog.csdn.net/m0_64535103/article/details/123603715