src/AVLTree/AVLTree1.js
var AVLTree1 = function ( compare ) {
this.compare = compare;
this.root = null;
};
AVLTree1.Node = function ( balancingfactor, parent, left, right, value ) {
this.balancingfactor = 0;
this.parent = parent;
this.left = left;
this.right = right;
this.value = value;
};