//Oppgave 1
      var tall = []
      for (var i = 0; i < 30; i++) {
        tall.push(Math.floor(Math.random()*10))
      }
      var forekomst = []
      var forekomstIndex  = []
      for (var i = 0; i < 10 ; i++) {
        forekomst[i] = 0;
        forekomstIndex[i] = "";
      }
      for (var i = 0; i < tall.length; i++) {
        forekomst[tall[i]]++;
        forekomstIndex[tall[i]] += i + ",";
      }
      for (var i = 0; i < forekomstIndex.length; i++) {
        forekomstIndex[i] = forekomstIndex[i].substr(0, forekomstIndex[i].length-1);
      }
      var p = document.querySelector("#oppg1");
      p.innerHTML = "<b>Array: </b>" + tall  +"<br>";
      for (var i = 1; i < forekomst.length; i++) {
        p.innerHTML += "<b>" + i + ":</b> " + forekomst[i] + "(" + forekomstIndex[i] + ")<br>";
      }