a<\/span> =<\/span> [[<\/span>"Rick Ashley"<\/span>,<\/span> "2.5"<\/span>]<\/span>,<\/span> [<\/span>"Cher"<\/span>,<\/span> "2.5"<\/span>]<\/span>,<\/span> [<\/span>"Rick Ashley"<\/span>,<\/span> "3.7"<\/span>]<\/span>,<\/span> [<\/span>"Cher"<\/span>,<\/span> "3.3"<\/span>]]<\/span>\na<\/span>.<\/span>inject<\/span>({})<\/span> {<\/span> |<\/span>result<\/span>,<\/span> array<\/span>|<\/span> result<\/span>[<\/span>array<\/span>[<\/span>0<\/span>]]<\/span> ||=<\/span> []<\/span>;<\/span> result<\/span>[<\/span>array<\/span>[<\/span>0<\/span>]]<\/span> <<<\/span> array<\/span>[<\/span>1<\/span>]<\/span>;<\/span>  array<\/span>[<\/span>1<\/span>]<\/span>;<\/span> result<\/span> }<\/span>.<\/span>to_a<\/span>.<\/span>map<\/span>{<\/span> |<\/span>x<\/span>|<\/span> x<\/span>.<\/span>flatten<\/span>}<\/span>\n=><\/span> [[<\/span>"Rick Ashley"<\/span>,<\/span> "2.5"<\/span>,<\/span> "3.7"<\/span>]<\/span>,<\/span> [<\/span>"Cher"<\/span>,<\/span> "2.5"<\/span>,<\/span> "3.3"<\/span>]]<\/span>\n<\/pre><\/div>\n