base/common/src/main/com/thesett/common/util/FibonacciHeap.java
public boolean offer(E o)
    {
        // Make a new node out of the new data element.
        Node newNode = new Node(o);

        // Check if there is already a minimum element.
        if (minNode != null)
        {
            // There is already a minimum element, so add this new element to its right.
            newNode.next = minNode.next;
            newNode.prev = minNode;

            minNode.next.prev = newNode;
            minNode.next = newNode;

            // Compare the new element with the minimum and update the minimum if neccessary.
            updateMinimum(newNode);
        }

        // There is not already a minimum element.
        else
        {
            // Update the new element previous and next references to refer to itself so that it forms a doubly linked
            // list with only one element. This leaves the data structure in a suitable condition for adding more
            // elements.
            newNode.next = newNode;
            newNode.prev = newNode;

            // Set the minimum element to be the new data element.
            minNode = newNode;
        }

        // Increment the count of data elements in this collection.
        size++;

        // Return true to indicate that the new data element was accepted into the heap.
        return true;
    }
public boolean offer(E o)
    {
        // Make a new node out of the new data element.
        Node newNode = new Node(o);

        // Check if there is already a minimum element.
        if (minNode != null)
        {
            // There is already a minimum element, so add this new element to its right.
            newNode.next = minNode.next;
            newNode.prev = minNode;

            minNode.next.prev = newNode;
            minNode.next = newNode;

            // Compare the new element with the minimum and update the minimum if neccessary.
            updateMinimum(newNode);
        }

        // There is not already a minimum element.
        else
        {
            // Update the new element previous and next references to refer to itself so that it forms a doubly linked
            // list with only one element. This leaves the data structure in a suitable condition for adding more
            // elements.
            newNode.next = newNode;
            newNode.prev = newNode;

            // Set the minimum element to be the new data element.
            minNode = newNode;
        }

        // Increment the count of data elements in this collection.
        size++;

        // Return true to indicate that the new data element was accepted into the heap.
        return true;
    }
Inserts the specified element into this heap.

@param  o The data element to add to the heap.

@return True if it was succesfully added, false if not. (This implmentation always returns true).86