Roulette Selection in Genetic Algorithms

Question

Can anyone provide some pseudo code for a roulette selection function? How would I implement this:

Answer 1

Prof. Thrun of Stanford AI lab also presented a fast(er?) re-sampling code in python during his CS373 of Udacity. Google search result led to the following link:

http://www.udacity-forums.com/cs373/questions/20194/fast-resampling-algorithm

Hope this helps