求阶乘
package asda;
import java.util.Scanner;
public class Main
{public static void main(String[] args){long sum = 0;long a[] = new long[25];a[0] = 1;for(int i = 1; i<=20; ++i){a[i] = a[i-1]*i;sum += a[i];}System.out.println(sum);}
}
?
轉載于:https://www.cnblogs.com/cwenliu/p/5956349.html
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