I have an array such as A-B-C-D-E-F-G-H-I-J-K I want to rotate it N places to the right; for example, if N=3, the array should end I-J-K-A-B-C-D-E-F-G-H

Assume that the only available operation is a FLIP method that can invert any portion of the array. For example, applied to the original array FLIP(3,6) would produce A-B-F-E-D-C-G-H-I-J-K.

i=startpos  l= length of array  a[]=array

flip(int i,int l)
{
    while(i<l)
    {
       a[i--]=a[l--]
       a[l--]=a[i--]
       i++
       l--
    }
}

Posted by Prashant on 2007-06-12 03:39:43