leetcode卡 test ruby 测试Ruby

leetcode卡Ruby test codes 1. leetcode: Intruction to Ruby 2. Seven Languages in Seven Weeks 3. runoob ruby tutorial lessons 4. Learn Ruby the Hard Way, 3rd Edition 5. Programming Ruby, The Ruby Programming Language, Meta-programming Ruby, etc. 6. Reference Offerical Documentation Official API Documentation Third-party Libraries Programming Ruby From Other Languages Ruby编码规范：在理想的世界里，遵循这些准则源代码布局所有源文件以UTF-8编码使用2个空格的缩进使用Unix风格的换行符( )每行不超过80字符每行的结尾不要有空白字符语法规范方法如果没参数就省略括号，有参数就使用括号不要使用f