调整数组（奇数在偶数前面）

# -*- coding:utf-8 -*-
class Solution:
    def reOrderArray(self, array):

        if not array:
            return array
        start = 0
        end = len(array)-1
        while start < end:
            if array[start]%2 == 0:
                if array[end]%2 == 1:
                    tmp = array[start]
                    array[start] = array[end]
                    array[end] = tmp
                    start +=1
                    end -=1
                else:
                    end -=1
            elif array[end]%2 == 0:
                start +=1
                end -=1
            else:
                start +=1
        return array