Check out example codes for "equal elements in two arrays in c++". It will help you in understanding the concepts better.

Code Example 1

bool equalelementsintwoarrays(int A[], int B[], int N) {
    sort(A, A+N);
    sort(B, B+N);
    int i = 0, j = 0;
    while (i < N && j < N) {
        if (A[i] == B[j]) return true;
        else if (A[i] > B[j]) j++;
        else i++;
    }
    return false;
}

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