Linked List Algorithms - DLL Reversal

Reverse Dll

Reverse DLL swaps each node's next and prev fields, then moves the head to the old tail.

Pointer Trio

`prev`, `curr`, and `next` protect the chain while each link is reversed.

The current node points backward to `prev`, then all pointers advance.

When traversal ends, `prev` becomes the new head.

DLL and k-group reversal use the same pointer discipline with extra boundaries.

List valuesSelected value

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Linked List Algorithms - DLL Reversal

Reverse DLL swaps each node's next and prev fields, then moves the head to the old tail.

`prev`, `curr`, and `next` protect the chain while each link is reversed.

The current node points backward to `prev`, then all pointers advance.

When traversal ends, `prev` becomes the new head.

DLL and k-group reversal use the same pointer discipline with extra boundaries.

List valuesSelected value