数组扁平化处理加上去重和排序

rubinTime · 发表于 2022-2-22 16:05:56

//数组扁平化后去重并且升序排列
  Array.prototype.flat1=function(){
    let arr=this
   const process_arr=  arr.map(function(item){
         if(Array.isArray(item)){
          return  item.flat1()
         }else{
          return item
         }
    })
    return [].concat(...process_arr)
  }
  Array.prototype.flat2=function(){
    let arr=this
   while(arr.some((item)=>Array.isArray(item))){
     arr=[].concat(...arr)
   }
   return arr
  }
function combine(arr,...fns){
  let res=undefined
     for(let i=0;i<fns.length;i++){
      res=fns[i].call(arr,res)
     } 
    return res
}
function  removeDuplicateArrItem(arr){
  return [...new Set(arr)]
}
function WashArr(arr){
  return arr.sort((a,b)=>a-b)
}

  const arr=[1,2,3,[4,5,[678,[59,[35,61,[87]],1,2,3]]]]
  const arr1=[[[[4]],59],6]
  const arr3=[[33,44],5,5,5,[[99,99,[100,101]]]]
  // console.log(arr.flat1(),arr1.flat1(),"\n")
  console.log(arr3.flat1())
  console.log(combine(arr3,Array.prototype.flat1,removeDuplicateArrItem,WashArr),"\n")
  console.log(arr.flat2())
  console.log(combine(arr,Array.prototype.flat2,removeDuplicateArrItem,WashArr))