package Wxte;
import java.util.Random;
public class Demmom {
public static void main(String[] args) {
// TODO Auto-generated method stub
Random rand = new Random();
for (int i = 0; i < 10; i++) {
int a = rand.nextInt(100);
System.out.println(a);
}
}
}
package Wxte;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
public class Best {
public static void main(String[] args) {
// TODO Auto-generated method stub
SimpleDateFormat CeshiFmt0 = new SimpleDateFormat("Gyyyy年MM月dd日");
SimpleDateFormat CeshiFmt5 = new SimpleDateFormat("今天是Gyyyy年的第 D 天 ，E");
Date now = new Date();
System.out.println(CeshiFmt0.format(now));
System.out.println(CeshiFmt5.format(now));
}
}
package Wxte;
import java.util.Scanner;
public class DAKE {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner input = new Scanner(System.in);
System.out.print("输入合法的邮箱：");
String str = input.nextLine();
int count = 0;// 定义一个计数器用来记录@的个数
int count2 = 0;// 定义一个计数器用来记录.的个数
int x = 0;// 用来记录出现第一个@对应的索引
int y = 0;// 用来记录出现第一个.对应的索引
for (int a = 0; a< str.length() - 1; a++) {
String str1 = str.substring(a, a + 1);
if (str1.equals("@")) {
count++;
x = a;
}
if (str1.equals(".")) {
count2++;
y = a;
}
// continue;
}
if (count == 1 && count2 == 1 && x < (y - 1) && x != 0 && y != str.length() - 1) {
str.endsWith("@163.com");
System.out.println("合法");
} else {
System.out.println("不合法");
}
}
}
