Merge pull request #54 from anubhav8421/add-solution-for-project-euler-problem-22

Add solution to problem 22 of Project Euler

Project Euler/Problem 22/problem22_sol1.rb

@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+# Problem 22
+# Using names.txt (right click and 'Save Link/Target As...'),
+# a 46K text file containing over five-thousand first names,
+# begin by sorting it into alphabetical order.
+# Then working out the alphabetical value for each name,
+# multiply this value by its alphabetical position in the list to obtain a name score.
+
+# For example, when the list is sorted into alphabetical order,
+# COLIN, which is worth 3 + 15 + 12 + 9 + 14 = 53,
+# is the 938th name in the list. So, COLIN would obtain a score of 938 * 53 = 49714.
+
+# What is the total of all the name scores in the file?
+
+# reading the contents of the file
+file_contents = File.read('p022_names.txt')
+
+# replacing the occuerance of \" to '' and spliting the result by ','
+# to get an array of sorted words
+words = file_contents.tr('\"', '').split(',').sort
+
+# this method calculates the worth of a word based on the ASCII
+# values of the characters
+def word_worth(word)
+  word.chars.sum { |char| char.ord - 'A'.ord + 1 }
+end
+
+# this method takes the words as an input
+# calls `word_worth` method on each word
+# to that value multiply that with the index of the word in the array
+# add the same to the result
+def total_rank(words)
+  result = 0
+  words.each_with_index { |word, index| result += word_worth(word) * (index + 1) }
+  result
+end
+
+# outputs total rank on the console
+puts total_rank(words)