irving2372357的博客

public class Operation1 { // 加法 public int add(int x,int y) { return x+y; } //减法 public int sub(int x,int y) { return x-y; } //乘法 public int mul(int x, int y) { return xy; } //除法 public int div(int x,...

public class zuoye01 { public static void main(String[] args) { int sum = 0; 方法一：双重循环 for (int i =100; i <= 1000; i++) {//查找100~1000的自然数 int j;//同一个作用域只能定义一个j for ( j = 2; j <=(int)(Math.sqrt(i)...

public static void main(String[]args) { Scanner scan = new Scanner(System.in); int a = scan.nextInt();//任意输入一个整数 int b = 1; for (int i = 0; i < 32; i++) {//循环体，32次循环 System.out.print(a&b); a =(...

import java.util.Scanner; public class zuoye02 { public static void main(String[] args) { Scanner scan = new Scanner(System.in); int a = scan.nextInt();//任意输入一个整数 if (((a %4 == 0)&&!(a%100 ==0...

ublic class Diangle{ public static void main(String[] args) { int[][]a =new int[4][4]; // if (args.length<16){ // System.out.println(“数字数量不足”); // return; // } int k=0; int sum=0; for (int i=0;i&...

import java.util.Random; public class RandomSum{ public static void main(String[] args) { Random random =new Random(); int[] result =new int[11];//[2,12]之间有11个元素，所以定义一个索引为11的一维数组来接收 int count =100;//定...