How to get the non recurring value from a String Array in javascript

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How to get the non recurring[not duplicate] value from a String Array in javascript

For eg:

if the String Array
A=[850,851,850]

then,i need the o/p as:
851

Posted 22-Jan-14 22:16pm

fiashieen

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3 solutions

Solution 2

That looks an array of numbers, to me.
Anyway you could, iterating on the items of the array, use the IndexOf method to check if it has a duplicate, stopping your iteration at first non-duplicate detection.

Posted 22-Jan-14 22:24pm

CPallini

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Christian Graus · Accepted Answer · 2014-01-22T22:22:00

Solution 1

OK, there is an easier way, using indexof

http://www.w3schools.com/jsref/jsref_indexof_array.asp[^]

var i = 0;

for(i; i < arr.length;++i)
{
  if (arr.indexOf(arr[i])) == arr.lastIndexOf(arr[i]))
   {
     // This means it's only in there once.
   }
}

Posted 22-Jan-14 22:22pm

Christian Graus

Updated 22-Jan-14 22:24pm

v2

Comments

Karthik_Mahalingam 23-Jan-14 4:54am

5

fiashieen 23-Jan-14 5:42am

yaa....you are right Karthik it was my mistake.This one really works for larger data's...Thank you so much n sorry Christian

Karthik_Mahalingam · Accepted Answer · 2014-01-22T22:30:00

Solution 3

try this..

JavaScript

var A = [850, 851, 850];
            var output = new Array();
            for (var i = 0; i < A.length; i++) {
                var current = A[i];
                var flag = 0;
                for (var j = 0; j < A.length; j++) {
                    if (current == A[j])
                        flag++;
                }
                if (flag == 1)
                    output.push(current);
            }

            alert(output);

Posted 22-Jan-14 22:30pm

Karthik_Mahalingam

Updated 22-Jan-14 22:57pm

v2

Comments

fiashieen 23-Jan-14 4:34am

Thanks a lot...:)

Christian Graus 23-Jan-14 4:41am

*sigh* This is very inefficient. My solution is much neater.

Karthik_Mahalingam 23-Jan-14 4:52am

Yes Christian, Due to inner loop i guess ..

Christian Graus 23-Jan-14 4:55am

Yes, that's right. It also does not run, 'out.push. should be 'output.push'

Karthik_Mahalingam 23-Jan-14 4:57am

yes, i changed later :)

Karthik_Mahalingam 23-Jan-14 4:53am

Welcome,
BTW , Please consider Christian's Solution.
My solution will be inefficient for large number of data.