排序-递归

public class TestFactorial {
    public static void main(String[] args) {

//求N的阶乘
 long result=factorial(5);
        System.out.println(result);


    }

    private static long factorial(int n) {
        if(n==1){

            return 1;
        }
        return n*factorial(n-1);
    }
//    求n的阶乘
}

D:javajdkjdk-14.0.2binjava.exe "-javaagent:D:ideaIC-2021.2.2IDEAIntelliJ IDEA 2020.1.1libidea_rt.jar=49644:D:ideaIC-2021.2.2IDEAIntelliJ IDEA 2020.1.1bin" -Dfile.encoding=UTF-8 -classpath E:ideaProjectitcastoutproductiondata_structure TestFactorial
120

Process finished with exit code 0