2024-11-05 v. 6.9.6: added "388. Longest Absolute File Path"

Author: fartem

README.md

@@ -561,3 +561,4 @@ Profile on LeetCode: [fartem](https://leetcode.com/fartem/).
 | 378. Kth Smallest Element in a Sorted Matrix                    | [Link](https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix/)                    | [Link](./lib/medium/378_kth_smallest_element_in_a_sorted_matrix.rb)                    | [Link](./test/medium/test_378_kth_smallest_element_in_a_sorted_matrix.rb)                    |
 | 380. Insert Delete GetRandom O(1)                               | [Link](https://leetcode.com/problems/insert-delete-getrandom-o1/)                                 | [Link](./lib/medium/380_insert_delete_getrandom_o1.rb)                                 | [Link](./test/medium/test_380_insert_delete_getrandom_o1.rb)                                 |
 | 382. Linked List Random Node                                    | [Link](https://leetcode.com/problems/linked-list-random-node/)                                    | [Link](./lib/medium/382_linked_list_random_node.rb)                                    | [Link](./test/medium/test_382_linked_list_random_node.rb)                                    |
+| 388. Longest Absolute File Path                                 | [Link](https://leetcode.com/problems/longest-absolute-file-path/)                                 | [Link](./lib/medium/388_longest_absolute_file_path.rb)                                 | [Link](./test/medium/test_388_longest_absolute_file_path.rb)                                 |

leetcode-ruby.gemspec

@@ -5,7 +5,7 @@ require 'English'
 ::Gem::Specification.new do |s|
   s.required_ruby_version = '>= 3.0'
   s.name = 'leetcode-ruby'
-  s.version = '6.9.5'
+  s.version = '6.9.6'
   s.license = 'MIT'
   s.files = ::Dir['lib/**/*.rb'] + %w[README.md]
   s.executable = 'leetcode-ruby'

lib/medium/388_longest_absolute_file_path.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+# https://leetcode.com/problems/longest-absolute-file-path/
+# @param {String} input
+# @return {Integer}
+def length_longest_path(input)
+  result = 0
+  file_sizes = ::Array.new(input.size, 0)
+  input.split("\n").each do |name|
+    dir_level = name.count("\t")
+    c_name = name.gsub("\t", '')
+    part = dir_level.positive? ? file_sizes[dir_level - 1] + 1 : 0
+    file_sizes[dir_level] = part + c_name.size
+
+    result = [result, file_sizes[dir_level]].max if c_name.include?('.')
+  end
+
+  result
+end

test/medium/test_388_longest_absolute_file_path.rb

@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+require_relative '../test_helper'
+require_relative '../../lib/medium/388_longest_absolute_file_path'
+require 'minitest/autorun'
+
+class LongestAbsoluteFilePathTest < ::Minitest::Test
+  def test_default_one
+    assert_equal(
+      20,
+      length_longest_path(
+        "dir\n\tsubdir1\n\tsubdir2\n\t\tfile.ext"
+      )
+    )
+  end
+
+  def test_default_two
+    assert_equal(
+      32,
+      length_longest_path(
+        "dir\n\tsubdir1\n\t\tfile1.ext\n\t\tsubsubdir1\n\tsubdir2\n\t\tsubsubdir2\n\t\t\tfile2.ext"
+      )
+    )
+  end
+
+  def test_default_three
+    assert_equal(
+      0,
+      length_longest_path('a')
+    )
+  end
+end