Exercise 12.13 Source Code

<!doctype html public "-//w3c//dtd html 3.2//en">

<html>
  
  <head>
    <title>
      Display Unique Numbers
    </title>
    <meta name="GENERATOR" content="Arachnophilia 4.0">
    <meta name="FORMATTER" content="Arachnophilia 4.0">
<script language="JavaScript">
<!-- ;

var theArray = new Array( 20 );
var dup = false;

document.writeln("Exercise 12.13<P>");

//  This construct does not work in Netscape or IE5:   for( var i in theArray )
for( var i = 0; i < theArray.length; i++ )
{
  theArray[ i ] = Math.floor( 10 + Math.random() * 90 );
  if( i > 0 )
  {
    for( var j = 0; j<i && dup == false; j++ )
    {
      if( theArray[ j ] == theArray[ i ]  )
        dup = true;
    }
  }
    if( dup == false )
      document.writeln("Item " + i + " was unique when added to array: " +
                theArray[ i ] +"<BR>");
    dup = false;
}

// end hide -->
</script>
  </head>
  
  <body>
    
    
    <P>
    <a href="12_13src.html">View Source</a>
  </body>
  
</html>