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Commit 3bed269

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2025年06月03日 v. 9.3.8: added "2678. Number of Senior Citizens"
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‎README.md‎

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@@ -457,6 +457,7 @@ Profile on LeetCode: [fartem](https://leetcode.com/fartem/).
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| 2951. Find the Peaks | [Link](https://leetcode.com/problems/find-the-peaks/) | [Link](./lib/easy/2951_find_the_peaks.rb) | [Link](./test/easy/test_2951_find_the_peaks.rb) |
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| 2966. Divide Array Into Arrays With Max Difference | [Link](https://leetcode.com/problems/divide-array-into-arrays-with-max-difference/) | [Link](./lib/easy/2966_divide_array_into_arrays_with_max_difference.rb) | [Link](./test/easy/test_2966_divide_array_into_arrays_with_max_difference.rb) |
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| 2974. Minimum Number Game | [Link](https://leetcode.com/problems/minimum-number-game/) | [Link](./lib/easy/2974_minimum_number_game.rb) | [Link](./test/easy/test_2974_minimum_number_game.rb) |
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| 2678. Number of Senior Citizens | [Link](https://leetcode.com/problems/number-of-senior-citizens/) | [Link](./lib/easy/2678_number_of_senior_citizens.rb) | [Link](./test/easy/test_2678_number_of_senior_citizens.rb) |
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| 3046. Split the Array | [Link](https://leetcode.com/problems/split-the-array/) | [Link](./lib/easy/3046_split_the_array.rb) | [Link](./test/easy/test_3046_split_the_array.rb) |
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| 3083. Existence of a Substring in a String and Its Reverse | [Link](https://leetcode.com/problems/existence-of-a-substring-in-a-string-and-its-reverse/) | [Link](./lib/easy/3083_existence_of_a_substring_in_a_string_and_its_reverse.rb) | [Link](./test/easy/test_3083_existence_of_a_substring_in_a_string_and_its_reverse.rb) |
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| 3090. Maximum Length Substring With Two Occurrences | [Link](https://leetcode.com/problems/maximum-length-substring-with-two-occurrences/) | [Link](./lib/easy/3090_maximum_length_substring_with_two_occurrences.rb) | [Link](./test/easy/test_3090_maximum_length_substring_with_two_occurrences.rb) |

‎leetcode-ruby.gemspec‎

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@@ -5,7 +5,7 @@ require 'English'
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::Gem::Specification.new do |s|
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s.required_ruby_version = '>= 3.0'
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s.name = 'leetcode-ruby'
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s.version = '9.3.7.1'
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s.version = '9.3.8'
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s.license = 'MIT'
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s.files = ::Dir['lib/**/*.rb'] + %w[README.md]
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s.executable = 'leetcode-ruby'
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# frozen_string_literal: true
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# https://leetcode.com/problems/number-of-senior-citizens/
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# @param {String[]} details
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# @return {Integer}
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def count_seniors(details)
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details.count { |detail| detail[11..12] > '60' }
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end
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# frozen_string_literal: true
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require_relative '../test_helper'
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require_relative '../../lib/easy/2678_number_of_senior_citizens'
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require 'minitest/autorun'
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class NumberOfSeniorCitizensTest < ::Minitest::Test
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def test_default_one
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assert_equal(
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2,
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count_seniors(
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%w[
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7868190130M7522
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5303914400F9211
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9273338290F4010
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]
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)
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)
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end
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def test_default_two
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assert_equal(
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0,
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count_seniors(
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%w[
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1313579440F2036
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2921522980M564
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]
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)
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)
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end
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end

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