Count and Say

这个题... 可能是用来娱乐的吧，也没有算法，反正就是暴力往前推就是了

class Solution(object):
    def countAndSay(self, n):
        """
        :type n: int
        :rtype: str
        """
        res = '1'
        for i in xrange(0, n - 1):
            tmp = ''
            cur = res[0]
            count = 0
            for ch in res:
                if ch == cur:
                    count += 1
                else:
                    tmp += (str(count) + cur)
                    cur = ch
                    count = 1
            res = tmp + str(count) + cur
        return res