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<!DOCTYPE html>
  <body>
   Subset sum problem bruteforce solver
   <canvas id="g" width="100%" height="100%" style="position:absolute;left:0;top:0;">
    <script>
        var set = [-98, -96, -95, -94, -84, -75, -73, -66, -61, -60, -58, -55, -54, -53, -44, -37, -26, -21, -18, -17, -9, -3, 1, 2, 3, 5, 13, 14, 15, 22, 27, 28, 36, 43, 46, 47, 48, 55, 58, 60, 63, 70, 72, 74, 76, 78, 80, 91, 95, 97];
       var loopinc = 0;
       var success = 0;
       var average = [];
       var k = 20;
       var lastway = "down";
        function random_unique_index_generator(number_of_indexes,top_index)
       {
         var cycles = 0;
        var storage = [];
         parental_loop:
        while(cycles != number_of_indexes)
        {
          loopinc++;
          var push_waiter = random_number(0,top_index);
          for(var i=0;i<=storage.length-1;i++)
         {
           loopinc++;
           if(storage[i] == push_waiter)
            continue parental_loop;
         }
         storage[cycles] = push_waiter;
         cycles++;
        }
        return storage;
       }
        function random_number(minimum,maximum){return Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;}
        function engage()
       {
         var subset = random_unique_index_generator(random_number(1,set.length),set.length-1);
         var sum = 0;
          for(var i=0;i<=subset.length-1;i++)
         {
           loopinc++;
           sum = sum + set[subset[i]];
         }
          if(sum == 0)
         {
          success++;
          average[success-1] = success/loopinc;
          return "["+subset + "] in "+loopinc + " cycles. Total finds: "+success+". Average finds per generic cycle: "+average[success-1]+(average[success-1]>average[success-2] ? " (increase)." : " (decrease).");
         }
          else
          return false;
       }
        function graphics()
       {
         var g = document.getElementById("g");
        g.width = window.innerWidth;
        g.height = window.innerHeight;
           var ctx = g.getContext('2d');
          ctx.lineWidth = 1;
          ctx.beginPath();
           ctx.moveTo(0,window.innerHeight/2);
          var current_left = 0;
          var current_top = window.innerHeight/2;
           setInterval(function draw(){
             var x = engage();
             if(x != false)
            {
                if(lastway == "up" && x.indexOf("decrease")>-1){ctx.fillText(loopinc,current_left-10,current_top-20);}
               if(x.indexOf("decrease")>-1){current_top = current_top + k; lastway="down";}
              else{current_top = current_top - k; lastway = "up";}
               current_left = current_left+k;
              ctx.lineTo(current_left,current_top);
              ctx.moveTo(current_left,current_top);
              ctx.stroke();
            }
          },1);
       }
       graphics();
    </script>
  </body>
 </html>