You are given a positive integer n. Your task is to build a number m by flipping the minimum number of bits in the binary representation of n such that m is less than n (m < n) and it is as maximal as possible. Can you? Input The first line contains…

Description Rudolf is on his way to the castle. Before getting into the castle, the security staff asked him a question: Given two binary numbers aa and bb of length nn. How many different ways of swapping two digits in aa (only in aa, not bb) so tha…

［抄题］: Given a positive integer, output its complement number. The complement strategy is to flip the bits of its binary representation. Note: The given integer is guaranteed to fit within the range of a 32-bit signed integer. You could assume no lead…

463. Island Perimeterhttps://leetcode.com/problems/island-perimeter/就是逐一遍历所有的cell,用分离的cell总的的边数减去重叠的边的数目即可.在查找重叠的边的数目的时候有一点小技巧,就是沿着其中两个方向就好,这种题目都有类似的规律,就是可以沿着上三角或者下三角形的方向来做.一刷一次ac,但是还没开始注意codestyle的问题,需要再刷一遍. class Solution { public: int islandPerime…

参考How do you set, clear and toggle a single bit in C? c/c++中对二进制位的操作包括设置某位为1.清除某位(置为0).开关某位(toggling a bit).检查某位是否为1等.这些操作较为常见并且可以作为其他位运算的基础接口,以下罗列几种方法: 传统方法 设置某位为1 number |= 1 << x; // 设置第x位为1 清除某位 number &= ~(1 << x); // 置第x位为0 开关某位 numb…

http://aggregate.org/MAGIC/ The Aggregate Magic Algorithms There are lots of people and places that create and collect algorithms of all types (here are a few WWW sites). Unfortunately, in building systems hardware and software, we in The Aggregate o…

C++ Bitsets给程序员提供一种位集合的数据结构.Bitsets使用许多二元操作符,比如逻辑和,或等. Constructors 创建新bitsets Operators 比较和赋值bitsets any() 如果有任何一个位被设置就返回true count() 返回被设置的位的个数 flip() 反转bits中的位 none() 如果没有位被设置则返回true reset() 清空所有位 set() 设置位 size() 返回可以容纳的位的个数 test() 返回指定位的状态 to_st…

前几天干了一件比较无聊的事儿——抄了一遍C++ STL bitset的源代码,把不懂的宏定义去掉了,发现(暂时)还能用,嘿嘿. #ifndef BITSET_H #define BITSET_H #include <string> #include <stdexcept> #include <iostream> template <size_t Bits> class BitSet { public: typedef bool element_type; t…

Also known as (7,4) code,7 trainsmitted bits for 4 source code. TRANSMIT The transmitted procedure can be reprecented as follows. $t=G^Ts$ where G is: import numpy as np G = np.matrix( [[1,0,0,0], [0,1,0,0], [0,0,1,0], [0,0,0,1], [1,1,1,0], [0,1,1,1]…

C++ 标准模板库(STL)C++ STL (Standard Template Library标准模板库) 是通用类模板和算法的集合,它提供给程序员一些标准的数据结构的实现如 queues(队列), lists(链表), 和 stacks(栈)等. C++ STL 提供给程序员以下三类数据结构的实现: 顺序结构 C++ Vectors C++ Lists C++ Double-Ended Queues 容器适配器 C++ Stacks C++ Queues C++ Priority Queue…