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Java发送http请求 (get 与 post方法请求)Java发送http请求 (get 与post方法请求)，以下代码经本人亲自调试可用！可以直接使用之。注意：通过BufferedReader 读取远程返回的数据时，必须设置读取编码，否则中文会乱码！packagecom.jiucool.www... 阅读全文
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原文：http://blog.chinaunix.net/uid-1911213-id-3086475.html 阅读全文
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问题： A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null. Return a deep copy of the list. 结点的定义如下： /** * Defini... 阅读全文
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问题： Given an array of integers, every element appears three times except for one. Find that single one. Note: Your algorithm should have a linear runtime complexity. Could you implement it with... 阅读全文
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问题： Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees of every node never d... 阅读全文
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问题： Say you have an array for which the ith element is the price of a given stock on day i. Design an algorithm to find the maximum profit. You may complete at most two transactions. 依旧还是那个熟悉的味道，如... 阅读全文
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问题： Say you have an array for which the ith element is the price of a given stock on day i. Design an algorithm to find the maximum profit. You may complete as many transactions as you like (ie, bu... 阅读全文
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问题： Say you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at most one transaction (ie, buy one and sell one share of the sto... 阅读全文
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问题： Reverse digits of an integer. Example1: x = 123, return 321 Example2: x = -123, return –321 Have you thought about this? Here are some good questions to ask before coding. Bonus p... 阅读全文
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问题： Given two binary trees, write a function to check if they are equal or not. Two binary trees are considered equal if they are structurally identical and the nodes have the same value. 分析： ... 阅读全文