Package g0301_0400.s0388_longest_absolute_file_path

Class Solution

java.lang.Object

g0301_0400.s0388_longest_absolute_file_path.Solution

public class Solution
extends Object

388 - Longest Absolute File Path\. Medium Suppose we have a file system that stores both files and directories. An example of one system is represented in the following picture:  Here, we have `dir` as the only directory in the root. `dir` contains two subdirectories, `subdir1` and `subdir2`. `subdir1` contains a file `file1.ext` and subdirectory `subsubdir1`. `subdir2` contains a subdirectory `subsubdir2`, which contains a file `file2.ext`. In text form, it looks like this (with ⟶ representing the tab character): dir ⟶ subdir1 ⟶ ⟶ file1.ext ⟶ ⟶ subsubdir1 ⟶ subdir2 ⟶ ⟶ subsubdir2 ⟶ ⟶ ⟶ file2.ext If we were to write this representation in code, it will look like this: `"dir \tsubdir1 \t\tfile1.ext \t\tsubsubdir1 \tsubdir2 \t\tsubsubdir2 \t\t\tfile2.ext"`. Note that the `' '` and `'\t'` are the new-line and tab characters. Every file and directory has a unique **absolute path** in the file system, which is the order of directories that must be opened to reach the file/directory itself, all concatenated by `'/'s`. Using the above example, the **absolute path** to `file2.ext` is `"dir/subdir2/subsubdir2/file2.ext"`. Each directory name consists of letters, digits, and/or spaces. Each file name is of the form `name.extension`, where `name` and `extension` consist of letters, digits, and/or spaces. Given a string `input` representing the file system in the explained format, return _the length of the **longest absolute path** to a **file** in the abstracted file system_. If there is no file in the system, return `0`. **Example 1:**  **Input:** input = "dir\n\tsubdir1\n\tsubdir2\n\t\tfile.ext" **Output:** 20 **Explanation:** We have only one file, and the absolute path is "dir/subdir2/file.ext" of length 20. **Example 2:**  **Input:** input = input = "dir\n\tsubdir1\n\t\tfile1.ext\n\t\tsubsubdir1\n\tsubdir2\n\t\tsubsubdir2\n\t\t\tfile2.ext" **Output:** 32 **Explanation:** We have two files: "dir/subdir1/file1.ext" of length 21 "dir/subdir2/subsubdir2/file2.ext" of length 32. We return 32 since it is the longest absolute path to a file. **Example 3:** **Input:** input = "a" **Output:** 0 **Explanation:** We do not have any files, just a single directory named "a". **Example 4:** **Input:** input = "file1.txt file2.txt longfile.txt" **Output:** 12 **Explanation:** There are 3 files at the root directory. Since the absolute path for anything at the root directory is just the name itself, the answer is "longfile.txt" with length 12. **Constraints:** * 1 <= input.length <= 104 * `input` may contain lowercase or uppercase English letters, a new line character `' '`, a tab character `'\t'`, a dot `'.'`, a space `' '`, and digits.

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int	lengthLongestPath(String input)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Solution

public Solution()

Method Detail

lengthLongestPath

public int lengthLongestPath(String input)