LeetCode刷题（38）--Simplify Path

栈

class Solution(object):
    def simplifyPath(self, path):
        """
        :type path: str
        :rtype: str
        """
        part = [p for p in  path.split("/") if p!="." and p!=""]
        stack = []
        for p in part:
            if p == "..":
                if len(stack) > 0:
                    stack.pop()
            else:
                stack.append(p)
        return "/"+"/".join(stack)