2025-03-13 v. 8.9.4: added "2058. Find the Minimum and Maximum Number of Nodes Between Critical Points"

Author: fartem

README.md

@@ -727,6 +727,7 @@ Profile on LeetCode: [fartem](https://leetcode.com/fartem/).
 | 1996. The Number of Weak Characters in the Game                                     | [Link](https://leetcode.com/problems/the-number-of-weak-characters-in-the-game/)                                     | [Link](./lib/medium/1996_the_number_of_weak_characters_in_the_game.rb)                                     | [Link](./test/medium/test_1996_the_number_of_weak_characters_in_the_game.rb)                                     |
 | 2007. Find Original Array From Doubled Array                                        | [Link](https://leetcode.com/problems/find-original-array-from-doubled-array/)                                        | [Link](./lib/medium/2007_find_original_array_from_doubled_array.rb)                                        | [Link](./test/medium/test_2007_find_original_array_from_doubled_array.rb)                                        |
 | 2023. Number of Pairs of Strings With Concatenation Equal to Target                 | [Link](https://leetcode.com/problems/number-of-pairs-of-strings-with-concatenation-equal-to-target/)                 | [Link](./lib/medium/2023_number_of_pairs_of_strings_with_concatenation_equal_to_target.rb)                 | [Link](./test/medium/test_2023_number_of_pairs_of_strings_with_concatenation_equal_to_target.rb)                 |
+| 2058. Find the Minimum and Maximum Number of Nodes Between Critical Points          | [Link](https://leetcode.com/problems/find-the-minimum-and-maximum-number-of-nodes-between-critical-points/)          | [Link](./lib/medium/2058_find_the_minimum_and_maximum_number_of_nodes_between_critical_points.rb)          | [Link](./test/medium/test_2058_find_the_minimum_and_maximum_number_of_nodes_between_critical_points.rb)          |
 | 2116. Check if a Parentheses String Can Be Valid                                    | [Link](https://leetcode.com/problems/check-if-a-parentheses-string-can-be-valid/)                                    | [Link](./lib/medium/2116_check_if_a_parentheses_string_can_be_valid.rb)                                    | [Link](./test/medium/test_2116_check_if_a_parentheses_string_can_be_valid.rb)                                    |
 | 2425. Bitwise XOR of All Pairings                                                   | [Link](https://leetcode.com/problems/bitwise-xor-of-all-pairings/)                                                   | [Link](./lib/medium/2425_bitwise_xor_of_all_pairings.rb)                                                   | [Link](./test/medium/test_2425_bitwise_xor_of_all_pairings.rb)                                                   |
 | 2429. Minimize XOR                                                                  | [Link](https://leetcode.com/problems/minimize-xor/)                                                                  | [Link](./lib/medium/2429_minimize_xor.rb)                                                                  | [Link](./test/medium/test_2429_minimize_xor.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 = '8.9.3'
+  s.version = '8.9.4'
   s.license = 'MIT'
   s.files = ::Dir['lib/**/*.rb'] + %w[README.md]
   s.executable = 'leetcode-ruby'

lib/medium/2058_find_the_minimum_and_maximum_number_of_nodes_between_critical_points.rb

@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+# https://leetcode.com/problems/find-the-minimum-and-maximum-number-of-nodes-between-critical-points/
+# @param {ListNode} head
+# @return {Integer[]}
+def nodes_between_critical_points(head)
+  prev = head
+  p = head.next
+  index = 2
+  first_index = -1
+  prev_index = -1
+  min = ::Float::INFINITY
+
+  while !p.nil? && !p.next.nil?
+    if (prev.val > p.val && p.next.val > p.val) || (prev.val < p.val && p.next.val < p.val)
+      first_index = index if first_index == -1
+      min = [min, index - prev_index].min if prev_index != -1
+      prev_index = index
+    end
+
+    prev = p
+    p = p.next
+    index += 1
+  end
+
+  min == ::Float::INFINITY ? [-1, -1] : [min, prev_index - first_index]
+end

test/medium/test_2058_find_the_minimum_and_maximum_number_of_nodes_between_critical_points.rb

@@ -0,0 +1,41 @@
+# frozen_string_literal: true
+
+require_relative '../test_helper'
+require_relative '../../lib/common/linked_list'
+require_relative '../../lib/medium/2058_find_the_minimum_and_maximum_number_of_nodes_between_critical_points'
+require 'minitest/autorun'
+
+class FindTheMinimumAndMaximumNumberOfNodesBetweenCriticalPointsTest < ::Minitest::Test
+  def test_default_one
+    assert_equal(
+      [-1, -1],
+      nodes_between_critical_points(
+        ::ListNode.from_array(
+          [3, 1]
+        )
+      )
+    )
+  end
+
+  def test_default_two
+    assert_equal(
+      [1, 3],
+      nodes_between_critical_points(
+        ::ListNode.from_array(
+          [5, 3, 1, 2, 5, 1, 2]
+        )
+      )
+    )
+  end
+
+  def test_default_three
+    assert_equal(
+      [3, 3],
+      nodes_between_critical_points(
+        ::ListNode.from_array(
+          [1, 3, 2, 2, 3, 2, 2, 2, 7]
+        )
+      )
+    )
+  end
+end