java算出1!+2!+3!+...+10!
时间: 2023-11-14 07:06:56 浏览: 39
可以使用循环和递归两种方式来计算1!+2!+3!+...+10!,以下是使用循环的方式:
```java
public class FactorialSum {
public static void main(String[] args) {
int sum = 0;
for (int i = 1; i <= 10; i++) {
int factorial = 1;
for (int j = 1; j <= i; j++) {
factorial *= j;
}
sum += factorial;
}
System.out.println("1!+2!+3!+...+10! = " + sum);
}
}
```
输出结果为:1!+2!+3!+...+10! = 4037913
使用递归的方式:
```java
public class FactorialSum {
public static void main(String[] args) {
int sum = 0;
for (int i = 1; i <= 10; i++) {
sum += factorial(i);
}
System.out.println("1!+2!+3!+...+10! = " + sum);
}
public static int factorial(int n) {
if (n == 1) {
return 1;
} else {
return n * factorial(n - 1);
}
}
}
```
输出结果为:1!+2!+3!+...+10! = 4037913