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# 1233. Remove Sub-Folders from the Filesystem
"""
given a list of folders 'folder', return the folders after removing all the
sub-folders in those folders. you may return the answer in any order. if a
'folder[i]' is located within another 'folder[j]', it is called a sub-folder
of it. a sub-folder of 'folder[j]' must start with 'folder[j]', followed by
'/'. the format of a path is one ormore concatenated strings of the form: '/'
followed by one or more lowercase english letters.
"""
class Solution(object):
def removeSubfolders(self, folder):
"""
:type folder: List[str]
:rtype: List[str]
"""
folder.sort(key=lambda x: len(x))
vis = set()
for i in folder:
for j in range(2, len(i)):
if i[j] == "/" and i[:j] in vis:
break
else:
vis.add(i)
return list(vis)
if __name__ == "__main__":
obj = Solution()
print(obj.removeSubfolders(folder=["/a", "/a/b", "/c/d", "/c/d/e", "/c/f"]))
print(obj.removeSubfolders(folder=["/a", "/a/b/c", "/a/b/d"]))
print(obj.removeSubfolders(folder=["/a/b/c", "/a/b/ca", "/a/b/d"]))
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