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摘要： 题目描述： Design a stack that supports push, pop, top, and retrieving the minimum element in constant time. push(x) -- Push element x onto stack. pop() -- 阅读全文

摘要： 题目描述： Write a program to find the node at which the intersection of two singly linked lists begins. For example, the following two linked lists: begin 阅读全文

摘要： 题目描述： Given an array of size n, find the majority element. The majority element is the element that appears more than ⌊ n/2 ⌋ times. You may assume th 阅读全文

摘要： 题目描述： Reverse a singly linked list. Example: Follow up: A linked list can be reversed either iteratively or recursively. Could you implement both? 代码实 阅读全文

摘要： 题目描述： Find the kth largest element in an unsorted array. Note that it is the kth largest element in the sorted order, not the kth distinct element. Ex 阅读全文

摘要： 题目描述： Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in t 阅读全文

摘要： 题目描述： Given a binary search tree, write a function kthSmallest to find the kth smallest element in it. Note: You may assume k is always valid, 1 ≤ k ≤ 阅读全文

摘要： 关于服务器的相关介绍：http://www.xcbkb.com/579.html 阅读全文

摘要： 题目描述： Given an integer, write a function to determine if it is a power of two. Example 1: Example 2: Example 3: 代码实现： 方法一：用递归的方法做： 方法二：用普通的while循环来做： 阅读全文

摘要： 题目描述： Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST. According to the definition of LCA on Wik 阅读全文