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newNode is always having NULL in its next field owing to the constructor mentioned in the class structure.
i.e. if we initialise a new node with data (by passing it as argument), we call the default constructor, which initialises newNode's data as data and newNode's next as NULL
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Insert a node at a specific position in a linked list
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newNode is always having NULL in its next field owing to the constructor mentioned in the class structure.
i.e. if we initialise a new node with data (by passing it as argument), we call the default constructor, which initialises newNode's data as data and newNode's next as NULL