第六周作业

1.

import java.util.*;
public class LH {
     public static void main(String[] args) {
            int[] a = {1,2,4,3,5};
            for(int i=0; i<a.length-1; i++) {  
                for(int b=0; b<a.length-i-1; b++) {  
                    if(a[b]>a[b+1]) {
                        int temp = a[b];
                        a[b] = a[b+1];
                        a[b+1] = temp;
                    }
                }
            }
            for(int element : a) {
                System.out.print(element+";");
            }
        }
    }

2.

import java.util.*;
public class LH {
   public static void main(String[] args) {
            int[] arr= { 34, 22, 35, 67, 45, 66, 12, 33 };
            Scanner sc = new Scanner(System.in);
            System.out.println("输入数字:");
            int a = sc.nextInt();
            int b = 0;
            for (int i = 0; i < arr.length; i++) {
                if (a == arr[i]) {
                    System.out.println("下标为：" + i);
                    b=1;
                    }
                }
            if (b == 0) {
            System.out.println("not found");
            }
        }    
    }

3.

import java.util.*;
public class LH {
   public static void main(String[] args) {
                    double[][] a = {{1,1,1,1 },{2,2,2,2}, {3,3,3,3}, {4,4,4,4}, {5,5,5,5}};
                    for (int i = 0; i < a.length; i++) {
                        for (int j = 0; j < a[i].length; j++) {
                            System.out.print(a[i][j] + "\t");
                        }
                        System.out.println();
                    }
                }
            }

4.

import java.util.*;
public class LH {
    public static void main(String[] args) {
                    int a[][] = {{1,1,1,1}, {2,2,2,2}, {3,3,3,6}};
                    int max = a[0][0];
                    for (int i = 0; i < a.length; i++) {
                        for (int j = 0; j < a[i].length; j++) {
                            if (a[i][j] > max) {
                                max = a[i][j];
                                    }
                                }
                            }
                            System.out.println("最大值=" + max);
                        }
            }