Finding duplicate values between two arrays

Question

Let\'s say I have the following two arrays:

int[] a = [1,2,3,4,5];
int[] b = [8,1,3,9,4];

I would like to take the first value of array

Answer 1

You just need two nested for loops

for(int i = 0; i < a.length; i++)
{
    for(int j = 0; j < b.length; j++)
    {
        if(a[i] == b[j])
        {
            //value is in both arrays
        }
    }
}

What this does is go to the first value of a and compare to each value in b, then go to the next value of a and repeat.