27 lines
751 B
JavaScript
27 lines
751 B
JavaScript
function DoublyLinkedList(value, next, prev) {
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this._value = value;
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this._next = next;
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this._prev = prev;
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}
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// from LinkedList, inherit: value(), next(), traverse(), print()
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DoublyLinkedList.prototype = new LinkedList();
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DoublyLinkedList.prototype.prev = function() {
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if (arguments.length == 1)
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this._prev = arguments[0];
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else
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return this._prev;
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}
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function createDoublyLinkedListFromArray(ary) {
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var node, prev, head = new DoublyLinkedList(ary[0], null, null);
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prev = head;
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for (var i = 1; i < ary.length; i++) {
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node = new DoublyLinkedList(ary[i], null, prev);
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prev.next(node);
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prev = node;
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}
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return head;
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}
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var head = createDoublyLinkedListFromArray([10,20,30,40]);
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