Sorting array of words by pure JavaScript

Question

I am having a set of strings in array, and by pure javascript I am trying to sort them and print them out. I am only getting blank array. Can someone help me out?

<script> 
(function(){
    var a = ["AB", "SU", "MN", "AC", "QA", "DZ", "CM", "EP"];
    var b = [];
    for(i=0;i<a.length;i++){
        var temp = a[i].split('')[0];
        for(j=0;j<b.length;j++){
            if (temp < b[j].split('')[0]){
                b[j] = push(a[i]);
            }
        }
    }
    console.log(b);
})();
</script>

Also I need to take in account comparision of second, third, fourth characters if they exist, but I am doomed even in fist letter comparison in string. Pls, take that also in account.

I don't know why you're splitting up the strings. You can compare string with just a[i] < b[j]. — Barmar
– Barmar, Commented Aug 27, 2016 at 13:08
Yes, it will compare the whole strings with each other. This is very basic Javascript. — Barmar
– Barmar, Commented Aug 27, 2016 at 13:13

Rachid · Accepted Answer · 2016-08-27 13:14:30Z

4

All you need is just calling

a.sort()

PS: sort is going to update your array (not just returning a copy of your array sorted)

answered Aug 27, 2016 at 13:14

Rachid

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1 Comment

AbhimanuSharma Over a year ago

without sort function

Mykola Borysyuk · Accepted Answer · 2016-08-27 13:19:33Z

3

Here you go. EDIT Consider comments i was wrong a little bit. Now all fine.

var a = ["AB", "SU", "MN", "AC", "QA", "DZ", "CM", "EP"];
var b = a.sort();
//also can use reverse here.
console.log(b);

And here is jsbin

https://jsbin.com/xikamitole/1/edit?html,js,console

Hope this helps.

edited Aug 27, 2016 at 13:19

answered Aug 27, 2016 at 13:09

Mykola Borysyuk

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8 Comments

Pointy Over a year ago

The callback here is incorrect. The callback passed to .sort() should return a negative number if the first parameter should sort before the second, 0 if they have the same sort order, and 1 if the second should sort before the first.

Barmar Over a year ago

The comparison function is supposed to return a number, v > k returns a boolean.

Mykola Borysyuk Over a year ago

Well in here we have strings. So consider example all valid.

Pointy Over a year ago

Sometimes bad code works despite being incorrect. That doesn't make it correct.

Mykola Borysyuk Over a year ago

Ty guys for fixing my issue. And glad that @Peterson got his answer.

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