Created
July 28, 2011 17:09
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カスタムソートのフールソース
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| class Employee | |
| attr_accessor :first_name | |
| attr_accessor :last_name | |
| attr_accessor :monthly_sales | |
| include Comparable | |
| # 月間売上高で社員をソート | |
| def <=>(other_employee) | |
| other_employee.monthly_sales <=> @monthly_sales | |
| end | |
| def to_s | |
| "#{@first_name} #{@last_name}: #{@monthly_sales}" | |
| end | |
| end | |
| # ランダム数 最小-最大 | |
| def range_rand(min,max) | |
| min + rand(max-min) | |
| end | |
| # ランダム名前 | |
| $names = File.new('names.txt', 'r').readlines.map {|line| line.chomp} | |
| def rand_name | |
| $names[rand($names.length)] | |
| end | |
| # ランダムデータで社員3人作ります | |
| employees = Array.new(3) { |index| | |
| employee = Employee.new | |
| employee.first_name = rand_name | |
| employee.last_name = rand_name | |
| employee.monthly_sales = range_rand(1000,10000) | |
| employee | |
| } | |
| # ソート前 | |
| puts employees.inspect | |
| # ソート後 | |
| puts employees.sort.inspect |
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