边工作边刷题：70天一遍leetcode: day 55

Word Pattern

要点：和isomorphic string就是同一题。
错误点：

• 别忘了先比长度

class Solution(object):
    def wordPattern(self, pattern, str):
        """
        :type pattern: str
        :type str: str
        :rtype: bool
        """
        hmap = {}
        str = str.split()
        if len(str)!=len(pattern):
            return False
        for i in xrange(len(pattern)):
            if pattern[i] in hmap:
                if str[i]!=hmap[pattern[i]]:
                    return False
            else:
                if str[i] in hmap.values():
                    return False
                hmap[pattern[i]]=str[i]
        
        return True