Merge pull request #379 from fartem/1518_Water_Bottles

2023-10-08 v. 3.2.2: added "1518. Water Bottles"

Author: fartem

README.md

@@ -268,3 +268,4 @@ Profile on LeetCode: [fartem](https://leetcode.com/fartem/).
 | 1502. Can Make Arithmetic Progression From Sequence                | [Link](https://leetcode.com/problems/can-make-arithmetic-progression-from-sequence/)                | [Link](./lib/easy/1502_can_make_arithmetic_progression_from_sequence.rb)                |
 | 1507. Reformat Date                                                | [Link](https://leetcode.com/problems/reformat-date/)                                                | [Link](./lib/easy/1507_reformat_date.rb)                                                |
 | 1512. Number of Good Pairs                                         | [Link](https://leetcode.com/problems/number-of-good-pairs/)                                         | [Link](./lib/easy/1512_number_of_good_pairs.rb)                                         |
+| 1518. Water Bottle                                                 | [Link](https://leetcode.com/problems/water-bottles/)                                                | [Link](./lib/easy/1518_water_bottles.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 = '3.2.1'
+  s.version = '3.2.2'
   s.license = 'MIT'
   s.files = ::Dir['lib/**/*.rb'] + %w[bin/leetcode-ruby README.md LICENSE]
   s.executable = 'leetcode-ruby'

lib/easy/1518_water_bottles.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+# https://leetcode.com/problems/water-bottles/
+# @param {Integer} num_bottles
+# @param {Integer} num_exchange
+# @return {Integer}
+def num_water_bottles(num_bottles, num_exchange)
+  result = num_bottles
+  e_bottles = num_bottles
+  while e_bottles >= num_exchange
+    portion = e_bottles / num_exchange
+    result += portion
+    e_bottles -= portion * num_exchange
+    e_bottles += portion
+  end
+
+  result
+end

test/easy/test_1518_water_bottles.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+require_relative '../test_helper'
+require_relative '../../lib/easy/1518_water_bottles'
+require 'minitest/autorun'
+
+class WaterBottlesTest < ::Minitest::Test
+  def test_default
+    assert_equal(13, num_water_bottles(9, 3))
+    assert_equal(19, num_water_bottles(15, 4))
+  end
+end