http://blog.codinghorror.com/you-dont-need-millions-of-dollars/ "In the information age, the barriers just aren't there," he said. "The barriers are self-imposed. If you want to set off and go develop some grand new thing, you don't need mi…
1. <代码大全> 史蒂夫·迈克康奈尔 (Code Complete) 2. <程序员修炼之道> Andrew Hunt [读过了,非常好的一本书] (Pragmatic Programmer) 3. <计算机程序的构造和解释> Harold Abelson (Structure and Interpretation of Computer Programs) 4. <C程序设计语言>Dennis M. Ritchie (The C Programmin…
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UVA 11774 - Doom's Day 题目链接 题意:给定一个3^n*3^m的矩阵,要求每次按行优先取出,按列优先放回,问几次能回复原状 思路:没想到怎么推理,找规律答案是(n + m) / gcd(n, m),在topcoder上看到一个证明,例如以下: We can associate at each cell a base 3-number, the log3(R) most significant digits is the index of the row of the cel…
启动spark的时候发现,主节点(master)上的Master进程还在,子节点(Worker)上的Worker进程自动关闭. 在子节点上查询log发现: ERROR Worker: All masters are unresponsive! Giving up 发现子节点连接不上master节点,经检测,master上防火墙没有关闭..…
Doom Time Limit: 12000/6000 MS (Java/Others) Memory Limit: 524288/524288 K (Java/Others)Total Submission(s): 1401 Accepted Submission(s): 368 Problem Description THE END IS COMINGGGGGG! Mike has got stuck on a mystery machine. If he cannot solv…
