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Swap Nodes in Pairs: step-by-step visual explanation

Learn the Swap Nodes in Pairs problem with a step-by-step DSA animation. Follow the Reversal Pattern solution with synced C#, Python, and Java code.

Reversal Pattern pattern

The next pointer is the only path forward. Save it first, then safely turn the current link around.

Difficulty: Medium · Approach: Visible link rewiring

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