/*计算1！+2！+……+10！*/

public class FactorialAdd{
	public static void main(String[] args){
		long sum = 0;
		long Factorial = 1;
		for(int i = 1; i <= 10; i ++){
			Factorial = Factorial * i;
			sum = sum + Factorial;
		}
		System.out.println(sum);
	}
}

/*求1+3+5+……+99的和*/

public class OddSum{
	public static void main(String[] args){
		int sum = 0;
		for(int i = 1; i < 100; i += 2){
			sum = sum + i;
		}
		System.out.println(sum);
	}
}

/*输出1~100内前5个可以被3整除的数*/

public class Calculate{
	public static void main(String[] args){
		int sum = 0;
		int i = 1;
		while(i <= 100){
			if(i % 3 == 0){
				System.out.print(i + " ");
				sum ++;
			}
			if(sum == 5){
				break;
			}
			i ++;
		}
	}
}

/*输出101~200内的质数*/

public class Prime{
	public static void main(String[] args){
		for (int i = 101; i <= 200; i += 2) {
			boolean isPrime = true;
			for ( int j = 2; j < i; j ++) {
				if ( i % j == 0) {
					isPrime = false;
					break;
				}
			}

			/*
			if (isPrime) {
				System.out.print(i + " ");
			}
			*/

			if (! isPrime) {
				continue;
			}
			System.out.print(i + " ");
		}
	}
}