Adaptations

data:text/html,<script type="text/javascript">
function checkredundant(adapts,la)
{
 if(la>5)
 {
  return false;
 }
 for(var i=0;i<adapts.length;i++)
 {
  if(adapts[i]==la)
  {
   return true;
  }
 }
 return false;
}

function adapt_random(adapts)
{
 var la=Math.floor(Math.random()*10);
 var found=checkredundant(adapts,la);
 adapts.push(la);
 return found;
}

function makechoices()
{
 var choices;
 do
 {
  choices=[Math.floor(Math.random()*10),Math.floor(Math.random()*10),Math.floor(Math.random()*10)];
 }
 while(choices[0]===choices[1] || choices[0]===choices[2] || choices[1]===choices[2]);
 return choices;
}

function adapt_avoid_random(adapts)
{
 var c=makechoices();
 var b=0;
 if(!checkredundant(adapts,c[0])) {b=0;}
 else if(!checkredundant(adapts,c[1])) {b=1;}
 else if(!checkredundant(adapts,c[2])) {b=2;}
 var found=checkredundant(adapts,c[b]);
 adapts.push(c[b]);
 return found;
}

function adapt_avoid(adapts)
{
 var c=makechoices();
 var b=-1;
 if(c[0]>5) {b=0;}
 else if(c[1]>5) {b=1;}
 else if(c[2]>5) {b=2;}
 else
 {
  b=0;
  if(!checkredundant(adapts,c[0])) {b=0;}
  else if(!checkredundant(adapts,c[1])) {b=1;}
  else if(!checkredundant(adapts,c[2])) {b=2;}
 }
 var found=checkredundant(adapts,c[b]);
 adapts.push(c[b]);
 return found;
}

function single(n)
{
 var adapts=[];
 while(adapts.length<n)
 {
  if(adapt_avoid(adapts)) /*Either adapt_random(), adapt_avoid_random() or adapt_avoid().*/
  {
   return true;
  }
 }
 return false;
}

function go()
{
 var amount=1000000;
 var total=0;
 for(var i=0;i<amount;i++)
 {
  if(single(5))
  {
   total++;
  }
 }
 alert([total," out of ",amount," had redundancies (",(total/amount)," <-> ",(amount/total),")."].join(""));
}

go();
</script>