NeetCode #325LC-707MediumLinked List
← Back to All Problems#325 · #707 · Design Linked List(设计链表)
📌 Problem Statement & Constraints
Design a linked list supporting
get(index), addAtHead(val), addAtTail(val), addAtIndex(index, val) and deleteAtIndex(index). get returns -1 for an invalid index; addAtIndex is a no-op for an out-of-range index. Constraints: 0 <= index, val <= 1000; at most 2000 calls.🔒
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