题目：backpack I （每个物品取一次，求最多能装多少物品） Given n items with size Ai, an integer...

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问题: Next Greater Element I You are given two arrays (without duplicates)...

题目：Add Two Numbers You are given two non-empty linked lists representing...

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题目 Given an array of n integers where n > 1, nums, return an array outpu...

题目：Contains Duplicate Given an array of integers, find if the array cont...

问题：Reverse Linked List Reverse a singly linked list. Input: 链表头结点 :: Lis...