排序算法（桶排序）

function sort(arr) {
    var newArr = new Array(arr.length);
    var newArr1 = [];
    for (let i = 0, l = arr.length; i < l; i++) {
        newArr[i] = 0;
    }

    for (let i = 0, l = arr.length; i < l; i++) {
        newArr[arr[i]] = newArr[arr[i]] + 1;
    }

    for (var i = arr.length; i > 0; i--) {
        for (var j = 1; j <= newArr[i]; j++)
            newArr1.push(i);
    }
    return newArr1;
}