1166. Design File System
https://leetcode.com/problems/design-file-system
Description
You are asked to design a file system that allows you to create new paths and associate them with different values.
The format of a path is one or more concatenated strings of the form: /
followed by one or more lowercase English letters. For example, "/leetcode"
and "/leetcode/problems"
are valid paths while an empty string ""
and "/"
are not.
Implement the FileSystem
class:
bool createPath(string path, int value)
Creates a newpath
and associates avalue
to it if possible and returnstrue
. Returnsfalse
if the path already exists or its parent path doesn't exist.int get(string path)
Returns the value associated withpath
or returns-1
if the path doesn't exist.
Example 1:
**Input:**
["FileSystem","createPath","get"]
[[],["/a",1],["/a"]]
**Output:**
[null,true,1]
**Explanation:**
FileSystem fileSystem = new FileSystem();
fileSystem.createPath("/a", 1); // return true
fileSystem.get("/a"); // return 1
Example 2:
**Input:**
["FileSystem","createPath","createPath","get","createPath","get"]
[[],["/leet",1],["/leet/code",2],["/leet/code"],["/c/d",1],["/c"]]
**Output:**
[null,true,true,2,false,-1]
**Explanation:**
FileSystem fileSystem = new FileSystem();
fileSystem.createPath("/leet", 1); // return true
fileSystem.createPath("/leet/code", 2); // return true
fileSystem.get("/leet/code"); // return 2
fileSystem.createPath("/c/d", 1); // return false because the parent path "/c" doesn't exist.
fileSystem.get("/c"); // return -1 because this path doesn't exist.
Constraints:
The number of calls to the two functions is less than or equal to
104
in total.2 <= path.length <= 100
1 <= value <= 109
ac
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