#!/usr/bin/env python
__author__ = "lynn lin"
from random import random
def random_shuffle(A):
length = len(A)
for i in range(0,length):
randomi = int(random()*length)
print randomi
A,A[randomi] = A[randomi],A
return A
if __name__ == '__main__':
A = [1,2,3,4,5]
B = random_shuffle(A)
print B