I'm trying to come up with a good algorithm to do the following: Given a list 'A' to be operated on, and a list 'I' of indices into 'A', rotate the i'th elements of 'A' left or right by one position.
Here's are some examples: A = [a, b, c, d, e, f] I = [0, 3, 4] rotate(A, I, 'left') --> [b, c, d, e, f, a] rotate(A, I, 'right') --> [b, a, c, f, d, e] I = [1, 3, 4] rotate(A, I, 'left') --> [b, a, d, e, c, f] rotate(A, I, 'right') --> [a, c, b, f, d, e] Any ideas? -- http://mail.python.org/mailman/listinfo/python-list
