Propositions: A proposition is a declarative sentence(that is, a sentence that declares a fact ) that is either true or false, but not both. 命题是一个陈述句(即陈述事实的句子),它或真或假,但不能既真又假. When Alexander the Great died in 323 B.C.E, a backlash against anything rel
8.02 Physics II (电磁学基础) Introduction to electromagnetism and electrostatics: electric charge, Coulomb's law, electric structure of matter; conductors and dielectrics. Concepts of electrostatic field and potential, electrostatic energy. Electric curr
华为的JAVA面试题 (后记:没有想到华为的面试题就是非同一般,非常多题不是一眼就行看得出来,至少对我这种鸟来说是这样.对我个人来说,看看这种题,可能比看<Think In Java>都还要好,由于这里面有非常多的东西,都是我们平时没有太在意,或者是仅仅是懂一点皮毛而已,通过做一下这种练习,把自己不知道.不熟悉的知识点,利用这个机会好好的巩固一下.这些答案是我自己做的,有一些是从网上来的,有一部是自己做的,而且另一部份没有做完,我不敢保证都对,所以请你在引用的时候,务必通过自己核对一下.当然,
导言:原文的作者是著名的Ghost和Spectre 这两个协议的创始团队的领队Aviv Zohar.原文作者说他的这篇原文又是引用了以下这两篇学术论文: How to Explain Zero Knowledge Protocols to Your Children (Quisquater et. al.) Cryptographic and Physical Zero-Knowledge Proof Systems for Solutions of Sudoku Puzzles (Gradwo
郑重声明:原文参见标题,如有侵权,请联系作者,将会撤销发布! Received May 14, 2018; revised June 28, 2018; accepted July 5, 2018.This work was supported by the National Institutes of Health (CRCNS R01-1207833), the Office of Naval Research (N000141712984), and the Alfred P. Sloan
1.A+B问题 给出两个整数a和b, 求他们的和, 但不能使用 + 等数学运算符 思路:作异或得到未进位和,作与并向左移1位得到进位,随后再重复操作俩结果,直到进位为0,适合用递归 public int aplusb(int a, int b) { int sum = a ^ b; int ca = (a & b) << 1; if (ca == 0) { return sum; } return aplusb(sum, ca); } 2016-12-07 2.尾部的零 设计一个算法,