std::bitset<8> binary("10101010"); // 假设有一个8位的二进制数 int start = 2; int end = 5; // 创建掩码 std::bitset<8> mask = (1<<(end+1)) - (1<<start);//(1 << (end - start + 1)) - 1; std::cout << mask << std::endl; // 提取目标位 std::bitset<8> extrac...
#include <iostream> #include <bitset> int main() { std::bitset<8> b(42); std::cout << b.to_string() << '\n' << b.to_string('*') << '\n' << b.to_string('O', 'X') << '\n'; } 输出: 00101010 **1*1*1* OOXOXOXO 参阅 ...
intbad(){uint64_tflags;puts("---bad---\n");printf("%d:%d\n",0,0);/* b0a[0].sho...
typedef std::bitset<10> B; typedef std::pair<int,int> PII; const int n=9; B h[n],l[n],g[n]; int a[n][n]; const int s[n][n]={ {6,6,6,6,6,6,6,6,6}, {6,7,7,7,7,7,7,7,6}, {6,7,8,8,8,8,8,7,6}, {6,7,8,9,9,9,8,7,6}, {6,7,8,9,10...
std::bitset的散列支持 (类模板特化) 注解 若某个位集合在编译时大小未知,或者必须在运行时改变其大小,则可代之以使用std::vector<bool>或boost::dynamic_bitset之类的动态类型。 示例 运行此代码 #include <bitset>#include <cassert>#include <cstddef>#include <iostream>intmain(){typedefstd::size_tlength...
#include <iostream> #include <bitset> int main() { std::bitset<8> b(42); std::cout << "Bitset is " << b << '\n'; b.reset(1); std::cout << "After b.reset(1): " << b << '\n'; b.reset(); std::cout << "After b.reset(): " << b << '\n'; } 输出: ...
// constructing bitsets#include<iostream>// std::cout#include<string>// std::string#include<bitset>// std::bitsetintmain(){ std::bitset<16> foo;std::bitset<16>bar(0xfa2);std::bitset<16>baz(std::string("0101111001")); std::cout <<"foo: "<< foo <<'\n'; ...
#include <iostream> #include <bitset> int main() { std::bitset<4> b; std::cout << b << "\n"; std::cout << b.flip(0) << '\n'; std::cout << b.flip(2) << '\n'; std::cout << b.flip() << '\n'; } 输出: 0000 0001 0101 1010参阅...
std :: bitset如何比std :: vector <bool>更快? 从Go迭代`std::vector<std::string>`? std::variant<bool中首选std::string,常量字符为std::string> * 如何将std::string转换为std::vector<uint8_t>? 将std::vector<uint8_t>转换为std::string_view 如何遍历boost::variant<std::vector<int>,std:...
bitset <N> B; 1. 表示声明了一个位长为\(N\)的\(bitset\), 所占用的内存也仅仅是\(N\)位, 也就是说,\(bitset\)的每一位占用仅仅是\(1\)位, 与同样是表示\(01\)的\(bool\)相比, 小了\(8\)倍 (\(bool\)最小时是\(1\ bit\),\(bitset\)一位只要\(1\ Byte\)). ...