Create Phone Number

Create Phone Number

题目

Write a function that accepts an array of 10 integers (between 0 and 9), that returns a string of those numbers in the form of a phone number.

Example:

createPhoneNumber([1, 2, 3, 4, 5, 6, 7, 8, 9, 0]) // => returns "(123) 456-7890"

The returned format must be correct in order to complete this challenge.
Don’t forget the space after the closing parentheses!

思路

略

答案

function createPhoneNumber(numbers) {
    return "(" + numbers[0] + numbers[1] + numbers[2] + ") " + numbers[3] + numbers[4] + numbers[5] + "-" + numbers[6] + numbers[7] + numbers[8] + numbers[9];
}

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Your order, please

题目

Your task is to sort a given string. Each word in the string will contain a single number. This number is the position the word should have in the result.

Note: Numbers can be from 1 to 9. So 1 will be the first word (not 0).

If the input string is empty, return an empty string. The words in the input String will only contain valid consecutive numbers.

Examples

"is2 Thi1s T4est 3a"  -->  "Thi1s is2 3a T4est"
"4of Fo1r pe6ople g3ood th5e the2"  -->  "Fo1r the2 g3ood 4of th5e pe6ople"
""  -->  ""

思路

略

答案

function order(words) {
    var arr = words.split(" ");
    var w_obj = new Object();
    var r_string = new String();
    for (var i in arr) {
        var n = arr[i].match(/[1-9]/g);
        w_obj[n] = arr[i];
    }
    for (var i = 1; i <= Object.getOwnPropertyNames(w_obj).length; i++) {
        r_string = r_string + w_obj[i] + " "
    }
    return r_string.trim();
}