java(5)流程控制n阶乘各位和

if条件语句：if...;  if ...else ...;  if... else if ...else

switch分支语句：switch(i){ case 1: {System.out.println(""); break;} default: System.out.println("");}

while循环: while(i>1){i--;}

do{}While()循环：Do{}while();

for循环：for(int i=0; i<10;i++){System.out.println(i);}

break, continue;

public class CalculateClass {

	public static void main(String[] args) {
		int x= 4;
		System.out.println(SUM(x));
		System.out.println(Mul(x));
	}
	
	public static int SUM(int x)
	{
		int sum = 0;
		
		while(x>10)
		{
			sum = sum + x%10;
			x = x/10;
		}
		sum += x;
		return sum;
	}
	
	public static float Mul(int x)
	{
		float result = 1;
		
		while(x>0)
		{
			result *= x;
			x--;
		}
		return result;
	}

}