MentalCalculation/bignum.html at master · abatyr/MentalCalculation · GitHub

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head>
<title>Mental calculation. Have fun with BigNum</title>
<style type="text/css">
html, body {
 height:100%;
 margin: 0;
 padding: 0;
 border: 1;
 outline: 0;
 font-family: 'Lucida Grande', 'Helvetica Neue', Helvetica, Arial, sans-serif;
 font-size: 100%;
 vertical-align: baseline;
 background: transparent;
}
div.main {
  background: #fff;
  margin: 0 auto;
  width: 300px;
  padding: 60px;
  text-align: center;
  /* border-radius */
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  border-radius: 5px;
  /* box-shadow */
  -webkit-box-shadow: rgba(0,0,0,0.2) 0px 1px 3px;
  -moz-box-shadow: rgba(0,0,0,0.2) 0px 1px 3px;
  box-shadow: rgba(0,0,0,0.2) 0px 1px 3px;
}
table.stat {
    position: absolute;
    top: 15px;
    right: 15px;
    text-align: left;
    width: 250px;
  }
table.best {
    position: absolute;
    top: 15px;
    left: 15px;
    text-align: left;
    width: 300px;
  }

</style>

<script type="text/javascript">
var txtlen = 5;
var lvl = 0;
var a = [ 0 ];
var b = [ 0 ];
var last = 0;
var best = 0;
var best10 = 0;
var sum = 0;
var att = 0;
var rank = 0;
var titles = ["Kid", "Novice", "Student", "Associate", "Bachelor", "Master", "Doctor", "Honoraris Causa Doctor"];
var ranking = [5000, 3200, 2500, 1600, 1200, 1000, 750, 600];
function new_quest(flag){
  var now = new Date();

  if(flag){
    document.getElementById('best').rows[8].cells[1].innerHTML =
now.getFullYear()+'.'+
('0'+(now.getMonth()+1)).slice(-2)+'.'+
('0'+now.getDate()).slice(-2) + ' ' +
('0'+now.getHours()).slice(-2)+':'+
('0'+now.getMinutes()).slice(-2)+':'+
('0'+now.getSeconds()).slice(-2);

    var row = document.getElementById('stat').insertRow(1);
    var cell = row.insertCell(0);
    sum += parseInt(now - last);
    att++;
    document.getElementById('best').rows[1].cells[1].innerHTML = att;
    if(best10 > 0){
      if(now - last < best10/10)
        cell.style.color = "Green";
      if(now - last > 3*best10/10)
        cell.style.color = "Red";
    }
    if((now - last < best)||(best == 0)) {
      best =  parseInt(now - last);
      document.getElementById('best').rows[2].cells[1].innerHTML = best;
      cell.style.fontSize = "150%";
    }
    cell.innerHTML = parseInt(now - last);
    //cell = row.insertCell(0);
    //cell.innerHTML = a + '+' + b + '=' + String(a+b);
    if(document.getElementById('stat').getElementsByTagName("tr").length > 11)
      sum -= parseInt(document.getElementById('stat').rows[11].cells[0].innerHTML);
    if(document.getElementById('stat').getElementsByTagName("tr").length >= 11){
      cell = row.insertCell(-1);
      cell.innerHTML = (sum+'').slice(0,-4)+'.'+(sum+'').slice(-4);
      document.getElementById('best').rows[4].cells[1].innerHTML = cell.innerHTML;
      if((sum < best10)||(best10 == 0)) {
        best10 = sum;
        document.getElementById('best').rows[3].cells[1].innerHTML =
          (best10+'').slice(0,-4)+'.'+(best10+'').slice(-4);
        while((best10 < 10*ranking[rank])&&(rank < 8))rank++;
        if(rank > 0) document.getElementById('best').rows[5].cells[1].innerHTML = titles[rank-1];
        if(rank < 8) {
          var target = ranking[rank];
          document.getElementById('best').rows[6].cells[1].innerHTML =
            (target+'').slice(0,-3)+'.'+(target+'').slice(-3);
        }
        else document.getElementById('best').rows[6].cells[1].innerHTML = "Nirvana";
      }
    }else{
      cell = row.insertCell(-1);
      cell.innerHTML = "-";
    }
    if(document.getElementById('stat').getElementsByTagName("tr").length > 25)
      document.getElementById('stat').deleteRow(-1);
    for(var i=0; i < txtlen - 1; i++){
      a[i] = a[i+1];
      b[i] = b[i+1];
    }
    a[txtlen - 1] = Math.floor(Math.random()*9 + 1);
    b[txtlen - 1] = Math.floor(Math.random()*10);
  }
  else
    for(var i = 0; i < txtlen; i++)
      if(i > 0){
        a[i] = Math.floor(Math.random()*9 + 1);
        b[i] = Math.floor(Math.random()*10);
      }else{
        a[i] = Math.floor(Math.random()*7 + 1);
        b[i] = Math.floor(Math.random()*(8-a[i])+1);
      }

  last = now;
  document.getElementById('inp').value = '';
  document.getElementById('q').innerHTML = '';
  for(var i=0; i < txtlen; i++) document.getElementById('q').innerHTML += a[i];
  document.getElementById('q').innerHTML += "?????<br>";
  for(var i=0; i < txtlen; i++) document.getElementById('q').innerHTML += b[i];
  document.getElementById('q').innerHTML += "?????";
  //document.getElementById('q').innerHTML += String(proper(0));
  //alert("new_quest()");
}
function proper(pos){
  if( a[pos+1] + b[pos+1] === 9 )	return a[pos] + b[pos] + Math.floor(proper(pos+1)/10);
  else
  if( a[pos+1] + b[pos+1] <   9 )	return a[pos] + b[pos];
  else					return a[pos] + b[pos] + 1;
}
function check(inp){
  if(a[0] == 0){
      if(parseInt(inp.value) == 0) {
          var now = new Date();
          last = 0;  sum = 0;
          if(att == 0)
            document.getElementById('best').rows[7].cells[1].innerHTML =
now.getFullYear()+'.'+
('0'+(now.getMonth()+1)).slice(-2)+'.'+
('0'+now.getDate()).slice(-2) + ' ' +
('0'+now.getHours()).slice(-2)+':'+
('0'+now.getMinutes()).slice(-2)+':'+
('0'+now.getSeconds()).slice(-2);
          document.getElementById('chk').innerHTML = '';
          var rows = document.getElementById('stat').rows;
          for(; rows.length > 1; )
            document.getElementById('stat').deleteRow(-1);
          new_quest(0);
      }
      else document.getElementById('inp').value = '';
  }
  else {
      if(inp.value == String(proper(0)%10)){
        //document.getElementById('chk').innerHTML += inp.value;
        new_quest(1);
      }else
      if(inp.value == String(proper(0)%10)+String(proper(1)%10)){
        //document.getElementById('chk').innerHTML += inp.value;
        new_quest(1);
        new_quest(1);
      }
      if(inp.value == 'q'){
          a = [ 0 ]; b = [ 0 ]; last = 0;
          document.getElementById('q').innerHTML = "Get ready"
          document.getElementById('inp').value = '';
        }
    }
}
</script>
</head>
<body>
<div class="main">
Welcome to the Fun with BigNum!<br />
<br />
Count from left to right <br />
Type '0' to start<br />
Type 'q' to stop.
<p id="q" style="font-size: 14pt">Get ready</p>

<input id="inp" type="text" onkeyup='check(this)' autofocus />
<br /><br />
<small><small>
<div style="text-align: left;">
Tips&hints:<br />
- Basic algorithm for left-to-right sum is<br />
1. Sum highest-order digits;<br />
2. Move to lower digits and check for three cases:<br />
 - if sum of the digits is not greater than 8, your sum is done; <br />
 - if sum of the digits is equal or greater than 10, add 1 to sum;<br />
 - if sum of the digits is equal to 9, follow the point 2 again.<br />
3. Check this method on example 1877 + 1123.<br />
- Edit field have to be clean after every time you type digits sum, if is not cleaned, you've made a mistake.<br />
- Time measurement is in milliseconds;<br />
<p id="chk"></p>
</div>
</small></small>
Return to <a href="./Sum.html">simple addition</a><br /><br />
For programmers we also have <br /><a href="./hex.html">hexdemical addition test</a><br />
</div>
<table id="stat" class="stat" ><tr><td>Time (ms)</td><td>Average of 10(s)</td></tr></table>
<table id="best" class="best" >
<tr><td>Level Bignum!</td></tr>
<tr><td>Attempts</td><td></td></tr>
<tr><td>Best one</td><td></td></tr>
<tr><td>Best avg of 10</td><td></td></tr>
<tr><td>Last avg of 10</td><td></td></tr>
<tr><td>Title</td><td></td></tr>
<tr><td>Next mark</td><td></td></tr>
<tr><td>First Attempt</td><td></td></tr>
<tr><td>Last Attempt</td><td></td></tr>
</table>
</body>
</html>