Js 2d array sort simple sample code

2020-03-30 01:25:25
OfStack
As follows:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
  <title> New Document </title>
  <meta name="Generator" content="EditPlus">
  <meta name="Author" content="">
  <meta name="Keywords" content="">
  <meta name="Description" content="">
  <script type="text/javascript">
  <!--

 function getCard(m){
  var ret = [], rnd; 
  for(var i = 0; i < m; i++){
   rnd = Math.floor(Math.random()*(i+0.9999));
   ret[i] = ret[rnd];
   ret[rnd] = i
  }
  return ret;
 }

 var data = [];
 {
  for(var i = 0; i < 100; i ++){
   data.push(getCard(10));
  }
 }
 //Two dimensional data sort
 function mySort(array, col, ord, b, e){
  if(array.length == 0) return;
  //Document.write (" before sort "+array);
  var t = [], s, i, curCol = col[0];
  for(i = b; i < e; i ++){
   s = new String(array[i][curCol]);
   s._obj = array[i];
   t.push(s)
  }
  t.sort();
  if(ord[0] == "des"){
   t.reverse();
  }
  for(i = 0; i < e - b; i++){
   //document.write("<br/>");
   //document.write(array[i]);
   //document.write("<br/>");
   //document.write(t[i]._obj);
   //document.write("<br/>");
   //document.write(t[i]._obj == array[b+i]);
   array[b+i] = t[i]._obj;
  }
  //Document.write (" ==================== ============= Br />" )
  //print(array);
  var begin, end;
  if(col.length > 1){
   col.shift();
   ord.shift();
   begin = b;
   for(i = b; i < e - b - 1; i++){
    if( array[i][curCol] != array[i+1][curCol] ){
     end = i+1;
     //document.write("begin="+begin+"end="+end+"<br/>");
     mySort(array,col,ord,begin,end);
     begin = end;
    }
   }
   if(begin != e){
    mySort(array,col,ord,begin,e);
   }
  }
  //document.write("<br/>");
  //Document.write (" sorted "+array);
 }
 function print(data){
  for(var i = 0; i < data.length; i++){
   document.write(data[i]+"<br/>");
  }
 }
 document.write(" Before ordering ====================<br/>");
 print(data);
 var b = new Date().getTime();;
 mySort(data, [0,1,2],['asc','des','asc'],0,data.length); 
 document.write(" when "+(new Date().getTime() - b));
 Document.write (" ==================== ============= Br />" )
 print(data);
  //-->
  </script>
 </head>
 <body>

 </body>
</html>