}*/ /*---using the pointer to pass the address to the swap function*/ /*void swap3(int *px,int *py) { int temp; temp = *px; *px = *py; *py = temp; }*/ /*---using the reference operator(&)---*/ void swap4(int &x, int &y) { int temp; temp = x; x = y; ...
#include"iostream"using namespace std;#include"string"intmain(){string s1="Tom And Jerry, Hello World, Tom !";// 删除从 0 位置开始的 3 个字符// 然后在 0 位置处插入 Jack 字符串// 返回的索引仍然是字符串本身string s2=s1.replace(0,3,"Jack");// 打印 s1 和 返回的字符串cout<<"s1 ...
std::move 是不是很陌生:)它是C++11的新概念,在内部实现只是做了cast。 template<typenameT>decltype(auto)move(T&& param){usingReturnType =remove_reference_t<T>&&;returnstatic_cast<ReturnType>(param); } AI代码助手复制代码 C++ 常用编程--Swap函数有几种写法? https://www.cppentry.com/bencandy.p...
using ReturnType = remove_reference_t<T>&&; return static_cast<ReturnType>(param); }
swap函数一般是一个程序员自定义函数。通常是实现两个变量数值的交换,用法比较广泛。可使用临时变量实现交换；可通过临时指针变量实现交换；可借助指针加入临时变量来实现交换。return 0;} swap1: x:4,y:3 swap2: x:4,y:3 swap3: x:3,y:4 swap4: x:4,y:3 swap5: x:3,y:4 swap6: x...
T c(a); a=b; b=c; } 需要构建临时对象,一个拷贝构造,两次赋值操作。2,针对int型优化:voidswap(int& __restrict a,int&__restrict b) { a^=b; b^=a; a^=b; } 无需构造临时对象,异或 因为指针是int,所以基于这个思路可以优化1:
Swapping in Java:The swapping just above using reference parameters in C doesn't work in Java, since Java doesn't have these kind of parameters, but often an application really only needs to swap two values in an array. In this case one can pass the array and the two indexes to swap ...
Using default value 1 Last cylinder, +cylinders or +size{K,M,G} (1-652,default 652): +1G Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. Syncing disks. [root@rhce /]# fdisk -l ...
由于你的代码在开头导入了标准命名空间 (using namespace std;)，所以标准库里的这个 swap 模板就被纳入...
使用swap函数需要#include<iostream>头文件。示例：include<iostream> //usingnamespacestd;intmain(intargc,char*argv[]){ inta=5;intb=8;std::swap(a,b);std::cout<<a<<""<<b<<std::endl;return0;}