I want to check duplicate values in an array

Question

Hi i\'m really glad to know this site to ask question. I have a problem that i made an array. And then i want to check matching values in the array. For example,

Answer 1

use something like:

int matchCount = 0;
for(int i = 0;i < (sizeof(array)/sizeof(int)); i++)
{
    for( int j=0; j<(sizeof(array)/sizeof(int)); j++)
    {
        if( i != j ) // skip when both indexes point to same location
        {
            if( array[i] == array[j] )
            {
                matchCount++;
            }
        }
    }
}

The above is for an array of integers. very similar code for arrays of other sized types

will count matches twice, so divide final matchCount by 2