题解 | #简化目录路径#

#
class Solution:
    def simplifyPath(self , path: str) -> str:
        # write code here
        dirs = path.split('/')
        new_path = []
        for i in dirs:
            if i=='..' and new_path:
                new_path.pop()
            elif i and i != '.' and i != '..':
                new_path.append(i)
        return '/'+'/'.join(new_path)