ruby on rails - Return string from multiple array items -

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i have multiple arrays have code string items in them. need match code given string , return class name matched array.

might better if show i've got. below arrays , underneath string need return if given string matches item within array. lets send string of '329' should return 'ss4' string:

['392', '227', '179', '176'] = 'ss1'  ['389', '386'] = 'ss2'  ['371', '338', '335'] = 'ss3'  ['368', '350', '332', '329', '323', '185', '182'] = 'ss4'

i need know best approach this. create helper method , have array each code block , check each array see if given string code contained , return string, ss1 or ss4. idea?

the efficient approach generate translator hash once can perform lookup super fast:

codes = {   ss1: ['392', '227', '179', '176'],   ss2: ['389', '386'],   ss3: ['371', '338', '335'],   ss4: ['368', '350', '332', '329', '323', '185', '182'] }  translator = codes.each_with_object({}){|(s, a), m| a.each{|n| m[n] = s.to_s}}

now can do:

translator['329'] => "ss4" translator['389'] => "ss2"

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