equal.js

function quickSort(arr) {

  var less = more = pivots = [];

  if (arr.length > 1) {
    pivot = arr[0];
    arr.forEach(function (i) {
      if (i < pivot) {
        less.push(i);
        console.log(i)
      } else if (i > pivot) {
        more.push(i);
      } else {
        pivots.push(i);
      }
    });

    console.log('! ' + less)
      //console.log(less + ' ! ' + pivots + ' ! ' + more)
  } else {
    return arr;
  }

  //quickSort(less);
  //quickSort(more);

  return less.concat(pivots).concat(more);
}

//this program will logs out 
// 4
// 6
// 6
// 2
// 7
// ! 8,4,6,13,6,2,7,46,32,12,53,124


function quickSort(arr) {

  var less = [],
      more = [],
      pivots = [];

  if (arr.length > 1) {
    pivot = arr[0];
    arr.forEach(function (i) {
      if (i < pivot) {
        less.push(i);
        console.log(i)
      } else if (i > pivot) {
        more.push(i);
      } else {
        pivots.push(i);
      }
    });

    console.log('! ' + less)
  } else {
    return arr;
  }

  //quickSort(less);
  //quickSort(more);

  return less.concat(pivots).concat(more);
}

//while this program will logs out
// 4
// 6
// 6
// 2
// 7
// ! 4,6,6,2,7


/*
Be careful of the equal sign!!
*/