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warmup10 min

Middle of the Linked List

Middle of the Linked List

Return the middle node of a singly linked list. For an even number of nodes, return the second of the two middle nodes. Slow/fast pointers again: when fast reaches the end, slow is at the middle.

middleOfList(list(1, 2, 3, 4, 5)).val; // 3
middleOfList(list(1, 2, 3, 4)).val;    // 3  (second middle)

Run your code to see results.

Stuck? This challenge exercises:

javascript.data-structures