test.hml

<html>

<script>
    function random_permuatation_no_loops(k) {

            var array = new Array(k);
            for(var idx = 0; idx < k; idx++)
            {
                array[idx] = idx;
            }

            if (k === 1){
                return [0];
            }
        
            var currentIndex = k - 1 , temporaryValue, randomIndex;
          
            // While there remain elements to shuffle...
            while (0 < currentIndex) {
              console.log(currentIndex);
              // Pick a remaining element...
              randomIndex = Math.floor(Math.random() * currentIndex); // < currentIndex!
        
             
              if (array[randomIndex] === currentIndex) {
                  continue;
              }
              
              currentIndex -= 1; 
              temporaryValue = array[currentIndex];
              array[currentIndex] = array[randomIndex];
              array[randomIndex] = temporaryValue;
            }
            console.log("swapping);

            if (array[0] === 0){
                    var rand_swap = Math.floor(Math.random() * (k-1)) + 1
                    array[0] = array[rand_swap];
                    array[rand_swap] = 0;
            }
        
            return array;
          }

    var f  = random_permuatation_no_loops(4);

</script>
<body>


</body>

<html>