Rearrange Characters to Make Target String — Python

# Time:  O(n + m)
# Space: O(1)

import collections


# freq table
class Solution(object):
    def rearrangeCharacters(self, s, target):
        """
        :type s: str
        :type target: str
        :rtype: int
        """
        cnt1 = collections.Counter(s)
        cnt2 = collections.Counter(target)
        return min(cnt1[k]//v for k, v in cnt2.iteritems())