Java_200416
1.有10个评委打分,(去掉一个最高一个最低)求平均分。 package ffeng; import java.util.*; public class f01 { public static void main(String[] args) { Scanner input = new Scanner(System.in); int a[] = { 4, 458, 53, 44, 84, 22, 86, 114, 98, 41 }; int i,j,temp,q=0; for (i = 0; i < a.length - 1; i++) { for (j = 0; j < a.length - 1 - i; j++) { if (a[j] > a[j + 1]) { temp = a[j]; a[j] = a[j + 1]; a[j + 1] = temp; } } } a[0] = 0; a[9] = 0; for (int x = 0; x < 10; x++) { q = a[x] + q; } q = q / 8; System.out.println("平均分是" + q); } }
2.自学一下Java随机数,生成一个长度为10的随机数组(每个数的范围是0~99),排序后输出。 package ffeng; import java.util.Random; public class f01{ public static void main(String[] args) { // TODO Auto-generated method stub int[] a = new int[10]; Random r=new Random(); for (int i = 0; i < a.length; i++) { a[i]=r.nextInt(100); } int t; for (int i = 0; i < a.length - 1; i++) { for (int j = 0; j < a.length-1-i; j++) { if (a[j + 1] > a[j]) { t = a[j]; a[j] = a[j + 1]; a[j + 1] = t; } } } for (int i : a) { System.out.println(i); } } }
3.制作彩票35选7程序。 (就是1~35随机生成7个不重复的数) package ffeng; import java.util.*; import java.util.Random; public class f01 { public static void main(String[] args) { int[] a = new int[7]; Random r = new Random(); for (int i = 0; i < 7; i++) { a[i] = r.nextInt(35) + 1; } System.out.println("随机生成的数为:"); for (int i = 0; i < 7; i++) { System.out.print(a[i]+"\t"); } } }
4.定义一个长度为10的int数组(如果没有特殊说明,静态赋值动态赋值都可以),统计数组中的最大值、最小值、以及奇 数和偶数的个数 package ffeng; public class f01 { public static void main(String[] args) { // TODO Auto-generated method stub int[] a = new int[]{44,33,22,11,55,66,77,88,99,67}; int max=a[0]; int min=a[0]; int js=0; int os=0; for (int i = 1; i <a.length ; i++) { if (a[i]>max){ max=a[i]; } } for (int j = 1; j <a.length ; j++) { if (a[j]<min){ min=a[j]; } } for (int k = 0; k< a.length; k++) { if (a[k]%2==0){ os+=1; }else { js+=1; } } System.out.println("最大值为"+max+"最小值为"+min+"偶数有"+os+"个"+"奇数有"+js+"个"); } }