Question

I have an array

var aos = ["a","a","a","b","b","c","d","d"];

I want to know if I can remove just 1 item if it finds 2 or more of the same value in the array. So for instance if it finds

"a", "a"

it will remove one of those “a”

This is my current code:

var intDennis = 1;
                        for (var i = 0; i < aos.length; i++) {
                            while (aos[i] == aos[intDennis]) {
                                aos.splice(i, 1);
                                intDennis++;
                                console.log(aos[intDennis], aos[i]);
                            } 
                            intDennis = 1;
                        }

NOTE: My array is sorted.

Answer 1

Edited after better understanding of OP use-case.
Updated solution and fiddle test to incorporate suggestion from pst in comments.

(Not for nothing, but this method does not require the original array be sorted.)

Try this…

var elements = [];
var temp = {};
for (i=0; i<aos.length; i++) {
    temp[aos[i]] = (temp[aos[i]] || 0) + 1;
}
for (var x in temp) {
    elements.push(x);
    for (i=0; i<temp[x]-2; i++) {
        elements.push(x);
    }
}

Fiddle Test