2025-01-09 v. 7.8.2: added "890. Find and Replace Pattern"

README.md

@@ -634,6 +634,7 @@ Profile on LeetCode: [fartem](https://leetcode.com/fartem/).
 | 869. Reordered Power of 2                                        | [Link](https://leetcode.com/problems/reordered-power-of-2/)                                        | [Link](./lib/medium/869_reordered_power_of_2.rb)                                        | [Link](./test/medium/test_869_reordered_power_of_2.rb)                                        |
 | 880. Decoded String at Index                                     | [Link](https://leetcode.com/problems/decoded-string-at-index/)                                     | [Link](./lib/medium/880_decoded_string_at_index.rb)                                     | [Link](./test/medium/test_880_decoded_string_at_index.rb)                                     |
 | 889. Construct Binary Tree from Preorder and Postorder Traversal | [Link](https://leetcode.com/problems/construct-binary-tree-from-preorder-and-postorder-traversal/) | [Link](./lib/medium/889_construct_binary_tree_from_preorder_and_postorder_traversal.rb) | [Link](./test/medium/test_889_construct_binary_tree_from_preorder_and_postorder_traversal.rb) |
+| 890. Find and Replace Pattern                                    | [Link](https://leetcode.com/problems/find-and-replace-pattern/)                                    | [Link](./lib/medium/890_find_and_replace_pattern.rb)                                    | [Link](./test/medium/test_890_find_and_replace_pattern.rb)                                    |
 
 ### Hard
 

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 = '7.8.1'
+  s.version = '7.8.2'
   s.license = 'MIT'
   s.files = ::Dir['lib/**/*.rb'] + %w[README.md]
   s.executable = 'leetcode-ruby'

lib/medium/890_find_and_replace_pattern.rb

@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+# https://leetcode.com/problems/find-and-replace-pattern/
+# @param {String[]} words
+# @param {String} pattern
+# @return {String[]}
+def find_and_replace_pattern(words, pattern) = words.select { |word| are_match(word, pattern) }
+
+private
+
+# @param {String} word
+# @param {String} word
+# @return {Boolean}
+def are_match(word, pattern)
+  values = {}
+  (0...word.size).each do |i|
+    w = word[i]
+    p = pattern[i]
+
+    values[w] = p unless values.include?(w)
+
+    return false unless values[w] == p
+  end
+
+  seen = ::Array.new(128, false)
+  values.each_value do |value|
+    return false if seen[value.ord]
+
+    seen[value.ord] = true
+  end
+
+  true
+end

test/medium/test_890_find_and_replace_pattern.rb

@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+require_relative '../test_helper'
+require_relative '../../lib/medium/890_find_and_replace_pattern'
+require 'minitest/autorun'
+
+class FindAndReplacePatternTest < ::Minitest::Test
+  def test_default_one
+    assert_equal(
+      %w[mee aqq],
+      find_and_replace_pattern(
+        %w[abc deq mee aqq dkd ccc],
+        'abb'
+      )
+    )
+  end
+
+  def test_default_two
+    assert_equal(
+      %w[a b c],
+      find_and_replace_pattern(
+        %w[a b c],
+        'a'
+      )
+    )
+  end
+end