1.package finish; import java.util.Scanner; public class csy { public static void main(String[] args) { Scanner input=new Scanner(System.in); System.out.println("请输入数组的值"); int [] a = new int [5] ; for (int i = 0; i < a.length; i++) { a[i]=input.nextInt(); } for(int i=0;i<a.length-1;i++){ for(int j=0;j<a.length-1-i;j++){ if(a[j]>a[j+1]){ int temp = a[j]; a[j] = a[j+1]; a[j+1] = temp; } } } System.out.println("冒泡排序后输出为"); for(int i=0;i<a.length;i++) { System.out.print(a[i]+" "); } } }
2.package finish; import java.util.Scanner; public class csy { public static void main(String[] args) { int [] a = new int [] {34,22,35,67,45,66,12,33} ; Scanner input=new Scanner(System.in); System.out.println("输入想查询的数字"); int i=input.nextInt(); int b=0; for(int j=0;j<a.length;j++){ if(a[j]==i){ System.out.println("该数存在于数组中下标为"+j); b=1; } } if(b==0) { System.out.println("not found"); } } }
3.package finish; import java.util.Scanner; public class csy { public static void main(String[] args) { double[][]arr={{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<arr.length;i++){ System.out.println(); for(int j=0;j<arr[i].length;j++){ System.out.print(arr[i][j]+" "); } } } }
4.package finish; import java.util.Scanner; public class csy { public static void main(String[] args) { int arr[][]={{1,3,5},{2,4,6}, {5,2,1},{13,14,9}}; int max=arr[0][0]; for(int i=0;i<arr.length;i++){ for(int j=0;j<arr[i].length;j++){ if(arr[i][j]>max){ max=arr[i][j]; } } } System.out.println("该二维数组的最大值为"+max); } }