ordenación de burbujas lista doblemente enlazada ejemplo de código c ++

Ejemplo: clasificación de burbujas en una lista doblemente enlazada

public void sortList() {  
        Node current = null, index = null;  
        int temp;  
        //Check whether list is empty  
        if(head == null) {  
            return;  
        }  
        else {  
            //Current will point to head  
            for(current = head; current.next != null; current = current.next) {  
                //Index will point to node next to current  
                for(index = current.next; index != null; index = index.next) {  
                    //If current's data is greater than index's data, swap the data of current and index  
                    if(current.data > index.data) {  
                        temp = current.data;  
                        current.data = index.data;  
                        index.data = temp;  
                    }  
                }  
            }  
        }  
    }

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