Leetcode/Trie/588-DesignIn-MemoryFileSystem/solution.py at main · yuchia0221/Leetcode · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
from typing import List


class Node:
    def __init__(self):
        self.content = ""
        self.children = dict()


class FileSystem:
    def __init__(self):
        self.root = Node()

    def ls(self, filePath: str) -> List[str]:
        node = self.root
        paths = [path for path in filePath.split("/") if path]
        print(paths)
        for path in paths:
            if path not in node.children:
                node.children[path] = Node()
            node = node.children[path]

        if node.content:
            return [paths[-1]]
        else:
            return sorted(node.children.keys())

    def mkdir(self, filePath: str) -> None:
        node = self.root
        paths = [path for path in filePath.split("/") if path]
        for path in paths:
            if path not in node.children:
                node.children[path] = Node()
            node = node.children[path]

    def addContentToFile(self, filePath: str, content: str) -> None:
        node = self.root
        paths = [path for path in filePath.split("/") if path]
        for path in paths:
            if path not in node.children:
                node.children[path] = Node()
            node = node.children[path]

        node.content += content

    def readContentFromFile(self, filePath: str) -> str:
        node = self.root
        paths = [path for path in filePath.split("/") if path]
        for path in paths:
            if path not in node.children:
                node.children[path] = Node()
            node = node.children[path]

        return node.content