code: function() {
              	var maxes = [];
  
              	for(var i = 1; i <= this.rows(); i++) {
              	    var max = null;
              	    var maxIndex = -1;
  
              	    for(var j = 1; j <= this.cols(); j++) {
              		if(max === null || this.e(i, j) > max) {
              		    max = this.e(i, j);
              		    maxIndex = j;
              		}
              	    }
  
              	    maxes.push(maxIndex);
              	}
  
              	return $V(maxes);
                  }
docs: return the indexes of the columns with the largest value for each row