Punctul 3 Combinari

by MariusNastasa

HTML

<h1>
Punctul 3 combinari
</h1>
<input type="number" placeholder="introduceti N" id="n">
<br>
<input type="number" placeholder ="introduceti k"id="k">
<br>
<button onclick="result()">Rezultat</button>

<div id="afisare"></div>

JavaScript

function result() {
  var n = document.getElementById("n").value;
  var k = document.getElementById("k").value;
  var fin = factorial(n) / (factorial(k) * factorial(n - k));
  document.getElementById('afisare').innerHTML = fin;
}

function factorial(coef) {
  if (coef < 0)
    return -1;
  else if (coef == 0)
    return 1;

  else {
    return (coef * factorial(coef - 1));
  }
}