Consider an existing linked list where next pointer of the last node points to the first node. If there is a singlenode, then next pointer of that node will point to itself. Now design a function to add a node before a given node. Here user will provide
Consider an existing linked list where next pointer of the last node points to the first node. If there is a singlenode, then next pointer of that node will point to itself. Now design a function to add a node before a given node. Here user will provide
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