Find two unique integers in sorted array

I have to write the following method:

I have sorted array of integers and in this array every integer repeats twice, except two elements. I have to find these two elements.

• Input: 1, 1, 2, 3, 3, 4, 4, 5

• Output: 2, 5

This is my solution:

private static int[] findUniques(int[] arr) {
    int[] res = new int[2];
    int start = 0;    // start can be 0 or 1 only; it indicates the position in array res
    for (int i = 0; i < arr.length-2; ) {
        if(arr[i] == arr[i+1]){
            i+=2;
            if(i == arr.length-1){
                res[1] = arr[arr.length-1];
            }
        }
        else{
            if(arr[i+1] == arr[i+2]){
                res[start] = arr[i];
                start++;
                i+=3;
                if(i == arr.length-1){
                    res[1] = arr[arr.length-1];
                }
            }
            else{
                res[start] = arr[i];
                res[start+1] = arr[i+1];
                break;
            }
        }
    }
    return res;
}

Is there a clearer way to find these two values? I don't like that I have so many if-else statements, but I don't know how to write it better.

For each number in the list, either

there is no next (at end of src list) - add to result list

• the next is different - add to the result list, increment result count (if all answers found, return)

• the next is the same; skip next, (add 2 to src pointer)

public int[] findUnique(int[] src){
    int[] res =  new int[2];
    int resIdx = 0;

    for(int i = 0; i < src.length;){
        // at the end of the list, or next is different
        if(i == src.length-1 || src[i] != src[i+1]){
            res[resIdx++] = src[i++];
            if (resIdx== 2) break;
        } else{
            // not different; skip next item
            i+=2;
        }
    }
    return res;
}

StackExchange Code Review Q#56341, answer score: 8