kw30007/sum.js

test

module.exports = {
    sum(...rest) {
        var res = rest.reduce((a, b) => {
            return a + b;
        })
        return res
    },
    division(a, b) {
        res1 = a / b;
        return res1;
    },
    reSum(num){
        if (num <= 1) {
            return 1;
        }
        else{
            return num + arguments.callee(num - 1)
        }
    },
    mulSum(num){
        if (num <= 1) {
            return 1;
        } else {
            return num * arguments.callee(num - 1)
        }
    }
}