CPP

right rotation of array in c++ by one element

void rotateByOne(int arr[])
{
    int i, last;
 
    // Storing last element of array
    last = arr[size - 1];
 
    for(i=size-1; i>0; i--)
    {
        // Moving each array element to its right
        arr[i] = arr[i - 1];
    }
 
   // Copying last element of array to first
    arr[0] = last;
}