golang中循环或递归求阶乘
package main import "fmt" func factorialFor(num int) (ret int) { // 循环求阶乘 ret = 1 for i := 1; i <= num; i++ { ret *= i } return } func factorialRecursion(num int) int { // 递归求阶乘 if num == 0{ return 1 } return num * factorialRecursion(num - 1) } func main() { // 循环求阶乘 ret := factorialFor(7) fmt.Println(ret) // 递归求阶乘 ret = factorialRecursion(7) fmt.Println(ret) }