Sort array with characters in Javascript

Question

I am sorting an array with numeric values and "-" as a characters. My array is

var arr = [5, 3, 10, "-", 2, "-"]

I want this to sort with numeric values followed by all the "-" characters.

Required result:-

final array = [10, 5, 3, 2, "-", "-"]

What i have tried:-

var array_with_chars= arr.filter(function( element ) {
    return element.name == '-';
});
var array_with_nums= arr_obj.filter(function( element ) {
    return element.name !== '-';
});

array_with_nums.sort(function(a, b) {
  return b.name - a.name;
});

for(var i = 0; i< array_with_chars.length; i++){
    array_with_nums.push(array_with_chars[i])
}

Is there any good way to sort this in single iteration?

Can you define what you mean by "special" characters? And how do you want the special ones ordered? Thx. — Ray Toal, Apr 04 '18 at 07:16
If "-" is the only non-numerical character then you can just do `arr.sort(function(a,b) { return b - a });` — JJJ, Apr 04 '18 at 07:19
wrong dupe target, because it does not answer the question of not a number items for sorting. — Nina Scholz, Apr 04 '18 at 07:19
@NinaScholz: Then change the target to a proper one. I'm sure it exists. — Cerbrus, Apr 04 '18 at 07:26
@Cerbrus these dupe questions you provided don't include characters, they're only about integers. — Taha Paksu, Apr 04 '18 at 07:31
@TahaPaksu: I've added another target a minute ago. This question is a duplicate of so many others. — Cerbrus, Apr 04 '18 at 07:32

Nina Scholz · Answer 1 · 2018-04-04T07:20:27.453

2

You could check for NaN and move this items to the end.

var array = [5, 3, 10, "-", 2, "-"];

array.sort((a, b) => isNaN(a) - isNaN(b) || b - a);

console.log(array);

edited Apr 04 '18 at 07:20

answered Apr 04 '18 at 07:18

Nina Scholz

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It works-- var array = [5, 3, 10, "-", 2, "-"]; array.sort((a, b) => isNaN(a) - isNaN(b) || b - a); Thanks @Nina – Abhishek Agarwal Apr 04 '18 at 07:24
Nice. One of those cases in which arithmetic-on-booleans-as-integers work pretty well. – Ray Toal Apr 04 '18 at 07:25
2

So, instead of closing obvious duplicates, you're ___still___ answering them. – Cerbrus Apr 04 '18 at 07:27

Sort array with characters in Javascript

1 Answers1