2024-09-02 v. 6.6.0: added "165. Compare Version Numbers"

Author: fartem

.rubocop.yml

@@ -20,6 +20,8 @@ Style/MultilineMethodSignature:
   Enabled: false
 Style/DisableCopsWithinSourceCodeDirective:
   Enabled: false
+Style/IpAddresses:
+  Enabled: false
 
 Bundler/GemComment:
   Enabled: false

README.md

@@ -525,3 +525,4 @@ Profile on LeetCode: [fartem](https://leetcode.com/fartem/).
 | 150. Evaluate Reverse Polish Notation                           | [Link](https://leetcode.com/problems/evaluate-reverse-polish-notation/)                           | [Link](./lib/medium/150_evaluate_reverse_polish_notation.rb)                           | [Link](./test/medium/test_150_evaluate_reverse_polish_notation.rb)                           |
 | 151. Reverse Words in a String                                  | [Link](https://leetcode.com/problems/reverse-words-in-a-string/)                                  | [Link](./lib/medium/151_reverse_words_in_a_string.rb)                                  | [Link](./test/medium/test_151_reverse_words_in_a_string.rb)                                  |
 | 155. Min Stack                                                  | [Link](https://leetcode.com/problems/min-stack/)                                                  | [Link](./lib/medium/155_min_stack.rb)                                                  | [Link](./test/medium/test_155_min_stack.rb)                                                  |
+| 165. Compare Version Numbers                                    | [Link](https://leetcode.com/problems/compare-version-numbers/)                                    | [Link](./lib/medium/165_compare_version_numbers.rb)                                    | [Link](./test/medium/test_165_compare_version_numbers.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 = '6.5.9.1'
+  s.version = '6.6.0'
   s.license = 'MIT'
   s.files = ::Dir['lib/**/*.rb'] + %w[README.md]
   s.executable = 'leetcode-ruby'

lib/medium/165_compare_version_numbers.rb

@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+
+# https://leetcode.com/problems/compare-version-numbers/
+# @param {String} version1
+# @param {String} version2
+# @return {Integer}
+def compare_version(version1, version2)
+  v1 = parts(version1)
+  v2 = parts(version2)
+  p = 0
+
+  while p < v1.size && p < v2.size
+    return 1 if v1[p] > v2[p]
+
+    return -1 if v1[p] < v2[p]
+
+    p += 1
+  end
+
+  return 1 if v1.size != p && !has_only_zeros(v1, p)
+
+  return -1 if v2.size != p && !has_only_zeros(v2, p)
+
+  0
+end
+
+private
+
+# @param {String} version
+# @return {Array}
+def parts(version)
+  parts = []
+  version.split('.').each do |part|
+    start = 0
+    start += 1 while start < part.size - 1 && part[start] == '0'
+
+    parts << part[start..].to_i
+  end
+
+  parts
+end
+
+# @param {Array} parts
+# @param {Integer} p
+# @return {Boolean}
+def has_only_zeros(parts, p)
+  while p < parts.size
+    return false unless parts[p].zero?
+
+    p += 1
+  end
+
+  true
+end

test/easy/test_1108_defanging_an_ip_address.rb

@@ -5,7 +5,6 @@
 require 'minitest/autorun'
 
 class DefangingAnIPAddressTest < ::Minitest::Test
-  # rubocop:disable Style/IpAddresses
   def test_default_one
     assert_equal(
       '1[.]1[.]1[.]1',
@@ -19,5 +18,4 @@ def test_default_two
       defang_i_paddr('255.100.50.0')
     )
   end
-  # rubocop:enable Style/IpAddresses
 end

test/medium/test_165_compare_version_numbers.rb

@@ -0,0 +1,47 @@
+# frozen_string_literal: true
+
+require_relative '../test_helper'
+require_relative '../../lib/medium/165_compare_version_numbers'
+require 'minitest/autorun'
+
+class CompareVersionNumbersTest < ::Minitest::Test
+  def test_default_one
+    assert_equal(
+      -1,
+      compare_version(
+        '1.2',
+        '1.10'
+      )
+    )
+  end
+
+  def test_default_two
+    assert_equal(
+      0,
+      compare_version(
+        '1.01',
+        '1.001'
+      )
+    )
+  end
+
+  def test_default_three
+    assert_equal(
+      0,
+      compare_version(
+        '1.0',
+        '1.0.0.0'
+      )
+    )
+  end
+
+  def test_additional_one
+    assert_equal(
+      1,
+      compare_version(
+        '1.0',
+        '0.0.0'
+      )
+    )
+  end
+end