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摘要： 题目原文：Given a circular linked list, implement an algorithm which returns node at the beginning of the loop.DEFINITIONCircular linked list: A (corrupt) linked list in which a node’s next pointer points to an earlier node, so as to make a loop in the linked list.EXAMPLEInput: A –> B –> C –> D 阅读全文

摘要： 题目原文：You have two numbers represented by a linked list, where each node contains a single digit. The digits are stored in reverse order, such that the 1’s digit is at the head of the list. Write a function that adds the two numbers and returns the sum as a linked list.EXAMPLEInput: (3 –> 1 –> 阅读全文