TA貢獻1796條經驗 獲得超4個贊
和樓上差不多，多驗證一層是否有重復letobj={"a":[1,3,5],"b":[2,4,6],"c":[1,2,2,3,3]}letres={}Object.keys(obj).forEach(key=>{obj[key].forEach(num=>{res[num]&&!res[num].includes(key)?res[num].push(key):res[num]?null:res[num]=[key]})})console.log(res)
TA貢獻1874條經驗 獲得超12個贊
leta={"a":[1,3,5],"b":[2,4,6],"c":[1,2]}letb=change(a)console.log(b)change(a){letb={}Object.keys(a).forEach((name)=>{a[name].forEach((num)=>{if(!b[num])b[num]=[]//elseif(b[num].includes(name))returnfalse//如果不允許重復就加上這句b[num].push(name)})})returnb}
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