2025-01-15 v. 8.0.7: added "2429. Minimize XOR"

Author: fartem

README.md

@@ -646,6 +646,7 @@ Profile on LeetCode: [fartem](https://leetcode.com/fartem/).
 | 946. Validate Stack Sequences                                    | [Link](https://leetcode.com/problems/validate-stack-sequences/)                                    | [Link](./lib/medium/946_validate_stack_sequences.rb)                                    | [Link](./test/medium/test_946_validate_stack_sequences.rb)                                    |
 | 1400. Construct K Palindrome Strings                             | [Link](https://leetcode.com/problems/construct-k-palindrome-strings/)                              | [Link](./lib/medium/1400_construct_k_palindrome_strings.rb)                             | [Link](./test/medium/test_1400_construct_k_palindrome_strings.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)                 |
+| 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)                                               |
 | 2657. Find the Prefix Common Array of Two Arrays                 | [Link](https://leetcode.com/problems/find-the-prefix-common-array-of-two-arrays/)                  | [Link](./lib/medium/2657_find_the_prefix_common_array_of_two_arrays.rb)                 | [Link](./test/medium/test_2657_find_the_prefix_common_array_of_two_arrays.rb)                 |
 | 3223. Minimum Length of String After Operations                  | [Link](https://leetcode.com/problems/minimum-length-of-string-after-operations/)                   | [Link](./lib/medium/3223_minimum_length_of_string_after_operations.rb)                  | [Link](./test/medium/test_3223_minimum_length_of_string_after_operations.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 = '8.0.6'
+  s.version = '8.0.7'
   s.license = 'MIT'
   s.files = ::Dir['lib/**/*.rb'] + %w[README.md]
   s.executable = 'leetcode-ruby'

lib/medium/2429_minimize_xor.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+# https://leetcode.com/problems/minimize-xor/
+# @param {Integer} num1
+# @param {Integer} num2
+# @return {Integer}
+def minimize_xor(num1, num2)
+  a = num1.to_s(2).count('1')
+  b = num2.to_s(2).count('1')
+
+  result = num1
+
+  (0...32).each do |i|
+    if a > b && (1 << i) & num1 != 0
+      result ^= 1 << i
+      a -= 1
+    end
+
+    if a < b && ((1 << i) & num1).zero?
+      result ^= 1 << i
+      a += 1
+    end
+  end
+
+  result
+end

test/medium/test_2429_minimize_xor.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+require_relative '../test_helper'
+require_relative '../../lib/medium/2429_minimize_xor'
+require 'minitest/autorun'
+
+class MinimizeXORTest < ::Minitest::Test
+  def test_default_one = assert_equal(3, minimize_xor(3, 5))
+
+  def test_default_two = assert_equal(3, minimize_xor(1, 12))
+
+  def test_additional_one = assert_equal(24, minimize_xor(25, 72))
+end