From 51e70adea253ce6e0fb78edbc48d6c4bc9d9d5ff Mon Sep 17 00:00:00 2001
From: fartem <jaman.smlnsk@gmail.com>
Date: Mon, 30 Dec 2024 10:44:56 +0300
Subject: [PATCH] 2024-12-30 v. 7.5.4: added "739. Daily Temperatures"

---
 README.md                                  |  1 +
 leetcode-ruby.gemspec                      |  2 +-
 lib/medium/739_daily_temperatures.rb       | 19 ++++++++++++
 test/medium/test_739_daily_temperatures.rb | 34 ++++++++++++++++++++++
 4 files changed, 55 insertions(+), 1 deletion(-)
 create mode 100644 lib/medium/739_daily_temperatures.rb
 create mode 100644 test/medium/test_739_daily_temperatures.rb

diff --git a/README.md b/README.md
index be0aef1a..38c1dd4c 100644
--- a/README.md
+++ b/README.md
@@ -618,3 +618,4 @@ Profile on LeetCode: [fartem](https://leetcode.com/fartem/).
 | 725. Split Linked List in Parts                                 | [Link](https://leetcode.com/problems/split-linked-list-in-parts/)                                 | [Link](./lib/medium/725_split_linked_list_in_parts.rb)                                 | [Link](./test/medium/test_725_split_linked_list_in_parts.rb)                                 |
 | 729. My Calendar I                                              | [Link](https://leetcode.com/problems/my-calendar-i/)                                              | [Link](./lib/medium/729_my_calendar_i.rb)                                              | [Link](./test/medium/test_729_my_calendar_i.rb)                                              |
 | 735. Asteroid Collision                                         | [Link](https://leetcode.com/problems/asteroid-collision/)                                         | [Link](./lib/medium/735_asteroid_collision.rb)                                         | [Link](./test/medium/test_735_asteroid_collision.rb)                                         |
+| 739. Daily Temperatures                                         | [Link](https://leetcode.com/problems/daily-temperatures/)                                         | [Link](./lib/medium/739_daily_temperatures.rb)                                         | [Link](./test/medium/test_739_daily_temperatures.rb)                                         |
diff --git a/leetcode-ruby.gemspec b/leetcode-ruby.gemspec
index 35de6f82..29fd4c97 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 = '7.5.3'
+  s.version = '7.5.4'
   s.license = 'MIT'
   s.files = ::Dir['lib/**/*.rb'] + %w[README.md]
   s.executable = 'leetcode-ruby'
diff --git a/lib/medium/739_daily_temperatures.rb b/lib/medium/739_daily_temperatures.rb
new file mode 100644
index 00000000..644922c3
--- /dev/null
+++ b/lib/medium/739_daily_temperatures.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+# https://leetcode.com/problems/daily-temperatures/
+# @param {Integer[]} temperatures
+# @return {Integer[]}
+def daily_temperatures(temperatures)
+  result = ::Array.new(temperatures.size, 0)
+  stack = []
+  (0...temperatures.size).each do |i|
+    while !stack.empty? && temperatures[i] > temperatures[stack.last]
+      index = stack.delete_at(stack.size - 1)
+      result[index] = i - index
+    end
+
+    stack << i
+  end
+
+  result
+end
diff --git a/test/medium/test_739_daily_temperatures.rb b/test/medium/test_739_daily_temperatures.rb
new file mode 100644
index 00000000..5fbdea6c
--- /dev/null
+++ b/test/medium/test_739_daily_temperatures.rb
@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+require_relative '../test_helper'
+require_relative '../../lib/medium/739_daily_temperatures'
+require 'minitest/autorun'
+
+class DailyTemperaturesTest < ::Minitest::Test
+  def test_default_one
+    assert_equal(
+      [1, 1, 4, 2, 1, 1, 0, 0],
+      daily_temperatures(
+        [73, 74, 75, 71, 69, 72, 76, 73]
+      )
+    )
+  end
+
+  def test_default_two
+    assert_equal(
+      [1, 1, 1, 0],
+      daily_temperatures(
+        [30, 40, 50, 60]
+      )
+    )
+  end
+
+  def test_default_three
+    assert_equal(
+      [1, 1, 0],
+      daily_temperatures(
+        [30, 60, 90]
+      )
+    )
+  end
+end