2-3-4 trees

A 2-3-4 tree is a self-balancing search tree data structure that allows efficient insertion, deletion, and retrieval operations. It is named after the maximum number of children each node can have: 2 nodes (containing 1 key), 3 nodes (containing 2 keys), and 4 nodes (containing 3 keys). The tree maintains a balanced height, ensuring logarithmic time complexity for these operations.

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