4_16

package hm_4_16;
/*
 * 第一题升序排列
 */
import java.util.Arrays;

public class test01 {

    public static void main(String[] args) {
        int[] arr = {26,36,96,25,6};
        for (int i = 0; i < arr.length; i++) {
            for (int j = 0; j < arr.length-1-i; j++) {
                if (arr[j]>arr[j+1]) {
                    int a = arr[j];
                    arr[j]=arr[j+1];
                    arr[j+1]=a;
                }
            }
        }
        System.out.println(Arrays.toString(arr));
    }

}
package hm_4_16;

import java.util.Scanner;

/*
 * 定义数组数输入值查看时否在数组里
 */
public class test02 {

    public static void main(String[] args) {
        int[] arr = {26,36,96,25,6,88};
        Scanner sca= new Scanner(System.in);
        System.out.println("输入一个数：");
        int  a = sca.nextInt();
        for (int i = 0; i < arr.length; i++) {
            if (arr[i]==a) {
                System.out.println("下标为："+i);
                return;
            }
        }
        System.out.println("Not Found");
        
            
    }

}
package hm_4_16;
/*
 * 矩阵
 */
public class test03 {

    public static void main(String[] args) {
        int arr[][] = {{1,5,9,6},{96,32,45,61},{11,24,36,45}}; 
        for (int i = 0; i < arr.length; i++) {
            for (int j = 0; j < arr[i].length; j++) {
                System.out.print(arr[i][j]+" ");
            }
            System.out.println();
//            System.out.println("---");
        }
    }

}
package hm_4_16;
/*
 * 求二维数组最大值
 */
public class test04 {

    public static void main(String[] args) {
        int arr[][] = {{1,5,9,6},{96,32,45,61},{11,24,36,45}}; 
        int max =arr[0][0];
        for (int i = 0; i < arr.length; i++) {
            for (int j = 0; j < arr[i].length; j++) {
                if (max<arr[i][j]) {
                    int a= max;
                    max=arr[i][j];
                    arr[i][j]=a;
//                    System.out.println(arr[i][j]);
                }
            }
        }
        System.out.println(max);
    }

}