Remove duplicate words in array elements

Question

I have a small problem with replace words in array. Ok, this my array:

var words = ['Category One Category One Clothes', 'Category One Category One Jackets'];

I want final result like this:

var result = ['Category One Clothes', 'Category One Jackets'];

Try with this method, but not working Removing duplicate strings using javascript

can i recommend using lodash/uniq? https://lodash.com/docs/4.17.4#uniq no reason to rewrite it. just reuse it — Dayan Moreno Leon, Jun 23 '17 at 03:38
@DayanMorenoLeon `uniq` will remove the duplicate elements from the **array**, not the string itself. So, it cannot be used. — Tushar, Jun 23 '17 at 03:41
Opsional - Your examples repeat the first two words only - do you want to remove words that repeat after that? Will the input array items always have the repeated words at the beginning, or might some already be just `'Category One Jackets'`? — nnnnnn, Jun 23 '17 at 03:51
my bad i did not read the question properly. however with a little of split magic uniq could still be used `uniq(str.split(' ')).join(' ');` — Dayan Moreno Leon, Jun 23 '17 at 04:08

score 7 · Accepted Answer · answered Jun 23 '17 at 03:40

7

For the given input, this should work.

words.map(w => w.replace(/([\w\s]+)\1+/, '$1'))

var words = ['Category One Category One Clothes', 'Category One Category One Jackets'];
var result = words.map(w => w.replace(/([\w\s]+)\1+/, '$1'));
console.log(result);

The regex ([\w\s]+) will match the words/spaces and \1+ will match the same word again.

answered Jun 23 '17 at 03:40

Tushar

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@Opsional Welcome. Please test all scenarios. This might not work for some inputs. – Tushar Jun 23 '17 at 03:57

score 1 · Answer 2 · answered Jun 23 '17 at 03:53

You can use this. I hope it will work for you.

function unique(array) {
    return $.grep(array, function (el, index) {
        return index == $.inArray(el, array);
    });
}
var words = ['Category One Category One Clothes', 'Category One Category One Jackets'];
var result = [];
for (i = 0; i < words.length; i++) {
    arr = unique(words[i].split(' '));
    result[i] = arr.join(' ');
}

Remove duplicate words in array elements

2 Answers2