From 4ec2d0755530a2bfecf92208dab0b1a49358d54a Mon Sep 17 00:00:00 2001
From: fartem <jaman.smlnsk@gmail.com>
Date: Wed, 15 Jan 2025 11:00:33 +0300
Subject: [PATCH] 2025-01-15 v. 8.0.9: added "950. Reveal Cards In Increasing
 Order"

---
 README.md                                     |  1 +
 leetcode-ruby.gemspec                         |  2 +-
 .../950_reveal_cards_in_increasing_order.rb   | 18 +++++++++++++
 ...st_950_reveal_cards_in_increasing_order.rb | 25 +++++++++++++++++++
 4 files changed, 45 insertions(+), 1 deletion(-)
 create mode 100644 lib/medium/950_reveal_cards_in_increasing_order.rb
 create mode 100644 test/medium/test_950_reveal_cards_in_increasing_order.rb

diff --git a/README.md b/README.md
index e4ba0454..fae734da 100644
--- a/README.md
+++ b/README.md
@@ -644,6 +644,7 @@ Profile on LeetCode: [fartem](https://leetcode.com/fartem/).
 | 921. Minimum Add to Make Parentheses Valid                       | [Link](https://leetcode.com/problems/minimum-add-to-make-parentheses-valid/)                       | [Link](./lib/medium/921_minimum_add_to_make_parentheses_valid.rb)                       | [Link](./test/medium/test_921_minimum_add_to_make_parentheses_valid.rb)                       |
 | 937. Reorder Data in Log Files                                   | [Link](https://leetcode.com/problems/reorder-data-in-log-files/)                                   | [Link](./lib/medium/937_reorder_data_in_log_files.rb)                                   | [Link](./test/medium/test_937_reorder_data_in_log_files.rb)                                   |
 | 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)                                    |
+| 950. Reveal Cards In Increasing Order                            | [Link](https://leetcode.com/problems/reveal-cards-in-increasing-order/)                            | [Link](./lib/medium/950_reveal_cards_in_increasing_order.rb)                            | [Link](./test/medium/test_950_reveal_cards_in_increasing_order.rb)                            |
 | 951. Flip Equivalent Binary Trees                                | [Link](https://leetcode.com/problems/flip-equivalent-binary-trees/)                                | [Link](./lib/medium/951_flip_equivalent_binary_trees.rb)                                | [Link](./test/medium/test_951_flip_equivalent_binary_trees.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)                 |
diff --git a/leetcode-ruby.gemspec b/leetcode-ruby.gemspec
index 81032ff4..523a86c9 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 = '8.0.8'
+  s.version = '8.0.9'
   s.license = 'MIT'
   s.files = ::Dir['lib/**/*.rb'] + %w[README.md]
   s.executable = 'leetcode-ruby'
diff --git a/lib/medium/950_reveal_cards_in_increasing_order.rb b/lib/medium/950_reveal_cards_in_increasing_order.rb
new file mode 100644
index 00000000..11577d41
--- /dev/null
+++ b/lib/medium/950_reveal_cards_in_increasing_order.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+# https://leetcode.com/problems/reveal-cards-in-increasing-order/
+# @param {Integer[]} deck
+# @return {Integer[]}
+def deck_revealed_increasing(deck)
+  length = deck.size
+  indices = (0...length).to_a
+  deck.sort!
+  result = ::Array.new(length)
+
+  deck.each do |card|
+    result[indices.shift] = card
+    indices << indices.shift unless indices.empty?
+  end
+
+  result
+end
diff --git a/test/medium/test_950_reveal_cards_in_increasing_order.rb b/test/medium/test_950_reveal_cards_in_increasing_order.rb
new file mode 100644
index 00000000..c8cd6145
--- /dev/null
+++ b/test/medium/test_950_reveal_cards_in_increasing_order.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+require_relative '../test_helper'
+require_relative '../../lib/medium/950_reveal_cards_in_increasing_order'
+require 'minitest/autorun'
+
+class RevealCardsInIncreasingOrderTest < ::Minitest::Test
+  def test_default_one
+    assert_equal(
+      [2, 13, 3, 11, 5, 17, 7],
+      deck_revealed_increasing(
+        [17, 13, 11, 2, 3, 5, 7]
+      )
+    )
+  end
+
+  def test_default_two
+    assert_equal(
+      [1, 1000],
+      deck_revealed_increasing(
+        [1, 1000]
+      )
+    )
+  end
+end