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

Since you haven't got this tagged as homework, I'll give you the benefit of the doubt. As you said you'll need two loops; loop foreach int in a[] and foreach int in b[]. Then just compare the two values at each iteration, which gives you the simple code of:

for (int x : a) {
   for (int y : b) {
      if (x == y) {
         System.out.println("a[] and b[] both contain " + x);
      }
   }
}