[英]How to Change deep hash format based on key and values in hash of array, hash format?
我有一個哈希作為輸入 :
{"2"=>{"809"=>["16E", "16Es"], "954"=>["16C", "16Cs"], "955"=>["15B", "15Br"],
"627"=>["10B", "10Bt"]}, "1"=>{"955"=>["15C", "15Ca"], "627"=>["10C", "10Cb"]}}
我想要像這樣的輸出:
{"809"=>{"2"=>["16E", "16Es"]}, "954"=>{"2"=>["16C", "16Cs"]},
"955"=>{"2"=>["15B", "15Br"], "1"=>["15C", "15Ca"]},
"627"=>{"2"=>["10B", "10Bt"], "1"=>["10C", "10Cb"]}}
我嘗試過:
{"1"=>{"627"=>["10C", "10Cb"], "955"=>["15C", "15Ca"]},
"2"=>{"627"=>["10B", "10Bt"], "955"=>["15B", "15Br"],
"954"=>["16C", "16Cs"],
"809"=>["16E", "16Es"]}}.each_with_index{|item, index| hash[item]=index}
但是我沒有得到預期的輸出。
這應該工作:
old_hash = {"2"=>{"809"=>["16E", "16Es"], "954"=>["16C", "16Cs"], "955"=>["15B", "15Br"], "627"=>["10B", "10Bt"]}, "1"=>{"955"=>["15C", "15Ca"], "627"=>["10C", "10Cb"]}}
new_hash = {}
old_hash.each do |key,value|
value.each do |k,v|
new_hash[k] = {key => v}
end
end
這應該給您您想要的東西:
original_hash = {"2"=>{"809"=>["16E", "16Es"], "954"=>["16C", "16Cs"], "955"=>["15B", "15Br"], "627"=>["10B", "10Bt"]}, "1"=>{"955"=>["15C", "15Ca"], "627"=>["10C", "10Cb"]}}
original_hash.inject({}) do |hash, entry|
entry[1].each do |k,v|
hash[k] ||= {}
hash[k][entry[0]] = v
end
hash
end
輸出:
{"809"=>{"2"=>["16E", "16Es"]}, "954"=>{"2"=>["16C", "16Cs"]}, "955"=>{"2"=>["15B", "15Br"], "1"=>["15C", "15Ca"]}, "627"=>{"2"=>["10B", "10Bt"], "1"=>["10C", "10Cb"]}}
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