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Commit 6c99554

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2025年04月21日 v. 9.3.0: added "3090. Maximum Length Substring With Two Occurrences"
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‎README.md‎

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@@ -456,6 +456,7 @@ Profile on LeetCode: [fartem](https://leetcode.com/fartem/).
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| 2652. Sum Multiples | [Link](https://leetcode.com/problems/sum-multiples/) | [Link](./lib/easy/2652_sum_multiples.rb) | [Link](./test/easy/test_2652_sum_multiples.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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| 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) |
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| 3110. Score of a String | [Link](https://leetcode.com/problems/score-of-a-string/) | [Link](./lib/easy/3110_score_of_a_string.rb) | [Link](./test/easy/test_3110_score_of_a_string.rb) |
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| 3131. Find the Integer Added to Array I | [Link](https://leetcode.com/problems/find-the-integer-added-to-array-i/) | [Link](./lib/easy/3131_find_the_integer_added_to_array_i.rb) | [Link](./test/easy/test_3131_find_the_integer_added_to_array_i.rb) |
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| 3136. Valid Word | [Link](https://leetcode.com/problems/valid-word/) | [Link](./lib/easy/3136_valid_word.rb) | [Link](./test/easy/test_3136_valid_word.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 = '9.2.9.1'
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s.version = '9.3.0'
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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/maximum-length-substring-with-two-occurrences/
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# @param {String} s
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# @return {Integer}
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def maximum_length_substring(s)
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max_len = 0
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left = 0
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char_count = ::Hash.new(0)
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s.each_char.with_index do |char, right|
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char_count[char] += 1
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while char_count[char] > 2
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char_count[s[left]] -= 1
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left += 1
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end
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current_len = right - left + 1
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max_len = [max_len, current_len].max
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end
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max_len
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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/3090_maximum_length_substring_with_two_occurrences'
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require 'minitest/autorun'
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class MaximumLengthSubstringWithTwoOccurrencesTest < ::Minitest::Test
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def test_default_one
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assert_equal(
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4,
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maximum_length_substring(
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'bcbbbcba'
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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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2,
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maximum_length_substring(
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'aaaa'
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)
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)
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end
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end

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