排序面试题

[su37josephxia]

面试题，var arr = [ [1, 2, 2], [3, 4, 5, 5], [6, 7, 8, 9, [11, 12, [12, 13, [14] ] ] ], 10];转化为 [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14] 请用不超过五行代码处理

[LeishenKOBE]

arr.flat(Infinity)

[wujiankun]

  var arrTarget = [ [1, 2, 2], [3, 4, 5, 5], [6, 7, 8, 9, [11, 12, [12, 13, [14] ] ] ], 10];
       function arrFlatten(arr){
           let tempIdx=-1,tempItem=null;
           while (arr.some((item,idx)=>{
               tempIdx = idx; tempItem=item;return Array.isArray(item)
           })){
               arr.splice(tempIdx,1);
               arr = [...tempItem,...arr];
           }
           return Array.from(new Set(arr));
       }
       let result = arrFlatten(arrTarget).sort();

[su37josephxia]

最精简答案 只有一行

• flat(Infinity) 扁平化
• Set去重
  假设我不知道这两个函数如何解决

const ary = [[1, 2, 2], [3, 4, 5, 5], [6, 7, 8, 9, [11, 12, [12, 13, [14]]]], 10]
console.log('ary', [... new Set(ary.flat(Infinity))].sort((a, b) => a - b))

[AprilYUE]

var arr = [ [1, 2, 2], [3, 4, 5, 5], [6, 7, 8, 9, [11, 12, [12, 13, [14] ] ] ], 10];
let arr1=[]
let parse = function(arr){
Array.from(arr).forEach(a=>{
typeof a == 'object'?parse(a):(arr1.includes(a)?a:arr1.push(a))
})
}
parse(arr)
arr1=arr1.sort((a,b)=>(a-b))
console.log(arr1)