排序并获取index的顺序

//排序并获取index的顺序:4,7,2,9-->9,7,4,2-->4,2,1,3
Array.prototype.getIndex=function(){
  var orderLength = this.length;
  var temp,tp;
  var c=[];
  for(var l=0;l<orderLength;l++){
  c[l]=l;
  }
  for(var u=0;u<orderLength;u++){
    for (var v=0;v<orderLength-u-1;v++){
      if(this[v]<this[v+1]){
        temp=this[v];
        this[v]=this[v+1];
        this[v+1]=temp;
        tp=c[v];
        c[v]=c[v+1];
        c[v+1]=tp;
      }
    }
  }
  return c;
}

原文地址:https://www.cnblogs.com/cdwp8/p/4040029.html