Leetcode 49 Group Anagram

leetcode_49_group_anagrams.rb

Leetcode 49 Group Anagram

# @param {String[]} strs
# @return {String[][]}

def group_anagrams(strs)
    sum_ascii_hash = {}
    strs.each_with_index do |str, i|
        sorted_aa = str.chars.sort.join
        sum_ascii_hash["#{sorted_aa}"] ? sum_ascii_hash["#{sorted_aa}"] << i : sum_ascii_hash["#{sorted_aa}"] = [i]
    end
    sum_ascii_hash.values.map{|ind_arr| ind_arr.map{|ind| strs[ind]}}
end

# Partially correct approach by calculating ascii value
# def old_group_anagrams(strs)
#     sum_ascii_hash = {}
#     strs.each_with_index do |str, i|
#         sum_key = str.split("").uniq.sum { |char| char.ord }
#         Ignore: #sum_key = str.split("").sum { |char| char.ord }
#         Ignore: #sum_key = str.split("").each_with_index.map{|char, i| char.ord * i}.sum
#         sum_ascii_hash["#{sum_key}"] ? sum_ascii_hash["#{sum_key}"] << i : sum_ascii_hash["#{sum_key}"] = [i]
#     end
#     sum_ascii_hash.values.map{|ind_arr| ind_arr.map{|ind| strs[ind]}}
# end