/C++/Two elements with difference K in c++

Two elements with difference K in c++

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

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