📅  最后修改于: 2022-03-11 15:02:33.555000             🧑  作者: Mango
function sumAll(arr) {
let fullArr = [];
let sum = 0;
const reducer = (accumulator, currentValue) => accumulator + currentValue;
arr.sort(function(a, b) {
return a - b
});
for (let i = arr[0]; i <= arr[1]; i++) {
fullArr.push(i);
}
sum = fullArr.reduce(reducer);
return sum;
}