From 67e63cbecae87169aaa627cbc39c433a324edc25 Mon Sep 17 00:00:00 2001
From: fartem <jaman.smlnsk@gmail.com>
Date: Thu, 6 Mar 2025 07:28:06 +0300
Subject: [PATCH] 2025-03-06 v. 8.8.4: added "1823. Find the Winner of the
 Circular Game"

---
 README.md                                             |  1 +
 leetcode-ruby.gemspec                                 |  2 +-
 .../1823_find_the_winner_of_the_circular_game.rb      | 11 +++++++++++
 .../test_1823_find_the_winner_of_the_circular_game.rb | 11 +++++++++++
 4 files changed, 24 insertions(+), 1 deletion(-)
 create mode 100644 lib/medium/1823_find_the_winner_of_the_circular_game.rb
 create mode 100644 test/medium/test_1823_find_the_winner_of_the_circular_game.rb

diff --git a/README.md b/README.md
index f27b7c7f..c211be5a 100644
--- a/README.md
+++ b/README.md
@@ -717,6 +717,7 @@ Profile on LeetCode: [fartem](https://leetcode.com/fartem/).
 | 1780. Check if Number is a Sum of Powers of Three                                   | [Link](https://leetcode.com/problems/check-if-number-is-a-sum-of-powers-of-three/)                                   | [Link](./lib/medium/1780_check_if_number_is_a_sum_of_powers_of_three.rb)                                   | [Link](./test/medium/test_1780_check_if_number_is_a_sum_of_powers_of_three.rb)                                   |
 | 1797. Design Authentication Manager                                                 | [Link](https://leetcode.com/problems/design-authentication-manager/)                                                 | [Link](./lib/medium/1797_design_authentication_manager.rb)                                                 | [Link](./test/medium/test_1797_design_authentication_manager.rb)                                                 |
 | 1814. Count Nice Pairs in an Array                                                  | [Link](https://leetcode.com/problems/count-nice-pairs-in-an-array/)                                                  | [Link](./lib/medium/1814_count_nice_pairs_in_an_array.rb)                                                  | [Link](./test/medium/test_1814_count_nice_pairs_in_an_array.rb)                                                  |
+| 1823. Find the Winner of the Circular Game                                          | [Link](https://leetcode.com/problems/find-the-winner-of-the-circular-game/)                                          | [Link](./lib/medium/1823_find_the_winner_of_the_circular_game.rb)                                          | [Link](./test/medium/test_1823_find_the_winner_of_the_circular_game.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)                                                                  |
diff --git a/leetcode-ruby.gemspec b/leetcode-ruby.gemspec
index da3251a8..831d9ecd 100644
--- a/leetcode-ruby.gemspec
+++ b/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 = '8.8.3'
+  s.version = '8.8.4'
   s.license = 'MIT'
   s.files = ::Dir['lib/**/*.rb'] + %w[README.md]
   s.executable = 'leetcode-ruby'
diff --git a/lib/medium/1823_find_the_winner_of_the_circular_game.rb b/lib/medium/1823_find_the_winner_of_the_circular_game.rb
new file mode 100644
index 00000000..a0e8de23
--- /dev/null
+++ b/lib/medium/1823_find_the_winner_of_the_circular_game.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+# https://leetcode.com/problems/find-the-winner-of-the-circular-game/
+# @param {Integer} n
+# @param {Integer} k
+# @return {Integer}
+def find_the_winner(n, k)
+  return 1 if n == 1
+
+  (find_the_winner(n - 1, k) + k - 1) % n + 1
+end
diff --git a/test/medium/test_1823_find_the_winner_of_the_circular_game.rb b/test/medium/test_1823_find_the_winner_of_the_circular_game.rb
new file mode 100644
index 00000000..db03ec84
--- /dev/null
+++ b/test/medium/test_1823_find_the_winner_of_the_circular_game.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+require_relative '../test_helper'
+require_relative '../../lib/medium/1823_find_the_winner_of_the_circular_game'
+require 'minitest/autorun'
+
+class FindTheWinnerOfTheCircularGameTest < ::Minitest::Test
+  def test_default_one = assert_equal(3, find_the_winner(5, 2))
+
+  def test_default_two = assert_equal(1, find_the_winner(6, 5))
+end