Merge pull request #597 from fartem/2255_Count_Prefixes_of_a_Given_String

2024-04-05 v. 5.4.0: added "2255. Count Prefixes of a Given String"

Author: fartem

README.md

@@ -400,3 +400,4 @@ Profile on LeetCode: [fartem](https://leetcode.com/fartem/).
 | 2239. Find Closest Number to Zero                                  | [Link](https://leetcode.com/problems/find-closest-number-to-zero/)                                  | [Link](./lib/easy/2239_find_closest_number_to_zero.rb)                                  |
 | 2243. Calculate Digit Sum of a String                              | [Link](https://leetcode.com/problems/calculate-digit-sum-of-a-string/)                              | [Link](./lib/easy/2243_calculate_digit_sum_of_a_string.rb)                              |
 | 2248. Intersection of Multiple Arrays                              | [Link](https://leetcode.com/problems/intersection-of-multiple-arrays/)                              | [Link](./lib/easy/2248_intersection_of_multiple_arrays.rb)                              |
+| 2255. Count Prefixes of a Given String                             | [Link](https://leetcode.com/problems/count-prefixes-of-a-given-string/)                             | [Link](./lib/easy/2255_count_prefixes_of_a_given_string.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 = '5.3.9'
+  s.version = '5.4.0'
   s.license = 'MIT'
   s.files = ::Dir['lib/**/*.rb'] + %w[bin/leetcode-ruby README.md LICENSE]
   s.executable = 'leetcode-ruby'

lib/easy/2255_count_prefixes_of_a_given_string.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+# https://leetcode.com/problems/count-prefixes-of-a-given-string/
+# @param {String[]} words
+# @param {String} s
+# @return {Integer}
+def count_prefixes(words, s)
+  words.count { |word| s.start_with?(word) }
+end

test/easy/test_2255_count_prefixes_of_a_given_string.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+require_relative '../test_helper'
+require_relative '../../lib/easy/2255_count_prefixes_of_a_given_string'
+require 'minitest/autorun'
+
+class CountPrefixesOfAGivenStringTest < ::Minitest::Test
+  def test_default
+    assert_equal(3, count_prefixes(%w[a b c ab bc abc], 'abc'))
+    assert_equal(2, count_prefixes(%w[a a], 'aa'))
+  end
+end