1346. Check if n and its double exist

//1346. Check if n and its double exist

class Solution {
    public boolean checkIfExist(int[] arr) {
        for(int i = 0; i < arr.length; i++) {
            int n = 2 * arr[i];

            for(int j = 0; j < arr.length; j++) {
                if(i == j) {
                    continue;
                }

                if(arr[j] == n) {
                    return true;
                }
            }
        }

        return false;
    }
}