GFG Sort an array of 0s, 1s and 2

class Solution
{
    public:
    void sort012(int arr[], int n)
    {
        int low=0;
        int mid=0;
        int high=n-1;
        
        while(mid<=high)
        {
            if(arr[mid]==0)
            {
                swap(arr[low],arr[mid]);
                ++low;
                ++mid;
                continue;
            }
            
            if(arr[mid]==2)
            {
                swap(arr[mid],arr[high]);
                --high;
                continue;
            }
            ++mid;
        }
    }
    
};