**6.29（双素数）双素数是指一对差值为2的素数。例如：3和5就是一对双素数，5和7是一对双素数，而11和13也是一对双素数。编写程序，找出小于1000的所有双素数。如下所示显示结果：
（3，5）
（5，7）
…
**6.29(Twin primes)(Twin primes) Twin primes are a pair of prime numbers that differ by 2. For example, 3 and 5 are twin primes, 5 and 7 are twin primes, and 11 and 13 are twin primes. Write a program to find all twin primes less than 1,200. Display the output as follows:
（3，5）
（5，7）
…
下面是参考答案代码:
代码语言：javascript复制// https://cn.fankuiba.com
public class Ans6_29_page203 {
public static void main(String[] args) {
for (int p = 3; p 2 < 1000; p ) {
if (isPrime(p) && isPrime(p 2))
System.out.println("(" p "," (p 2) ")");
}
}
public static boolean isPrime(double number) {
boolean isPrime = true;
for (int divisor = 2; divisor <= number / 2; divisor ) {
if (number % divisor == 0) {
isPrime = false;
break;
}
}
return isPrime;
}
}
