swap

六、 程序题 1.写一个复数类（操作符重载） #include<iostream> using namespace std; class Complex{ public: Complex(double r=0.0,double i=0.0):read(r),imag(i){}; Complex operator+(const Complex &c2)const; Complex operator-(const Complex &c2)const; void display()const; private: double real,imag; }; Complex Complex::operator+(const Complex &c2)const{ return Complex(real=c2.real+real,imag=c2.imag+imag); } Complex Complex::operator-(const Complex &c2)const{ return Complex(real=c2.real-real,imag=c2.imag-imag); } void Complex::display()const{ cout<<"("<<real<<","<<imag<<")"<<endl; } void int main(){ Complex c1(5,4),c2(2

is there some jQuery code to swap 2 sets of elements with animation? i only found Move list item to top of unordered list using jQuery but its too limited (only slide element to top and not accounting for different margins). see this fiddle . arbitrary borders, margins, paddings, sizes etc. supported and still no jumps at animation end. function slideSwap($set1, $set2) { //$elem.append(infoString($elem)); //$after.append(infoString($after)); $set1.css("color", "red"); $set2.css("color", "blue"); var $set3 = $set2.last().nextAll(); $set3.css("color", "green"); var mb_prev = cssprop($set1.first(

I am new with C# and I can't understand why this code doesn't work. using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { char[] sw = "ab".ToCharArray(); swap(sw[0], sw[1]); string end = new string(sw); Console.Write(end); } static void swap(char a, char b) { char temp = a; a = b; b = temp; } } } What I expect on console is "ba" but I get "ab". I was able to find different approach to solve this problem but what I would like to know is what is the

I've been trying to extend the xor-swap to more than two variables, say n variables. But I've gotten nowhere that's better than 3*(n-1) . For two integer variables x1 and x2 you can swap them like this: swap(x1,x2) { x1 = x1 ^ x2; x2 = x1 ^ x2; x1 = x1 ^ x2; } So, assume you have x1 ... xn with values v1 ... vn . Clearly you can "rotate" the values by successively applying swap: swap(x1,x2); swap(x2,x3); swap(x3,x4); ... swap(xm,xn); // with m = n-1 You will end up with x1 = v2 , x2 = v3 , ..., xn = v1 . Which costs n-1 swaps, each costing 3 xors, leaving us with (n-1)*3 xors. Is a faster

Possible Duplicate: how to provide a swap function for my class? There are some questions about this, but a lot of contradictions (person A giving solution A' with many upvotes with person B saying it's UB) or "only works if the compiler supports ADL" is answered. So, say I have the following template (container) class: template<typename T> class C { // ... void swap(C<T>& y) throw(); // C x; x.swap(y); } then what is the correct way to make sure this (example) code works: C<int> x, y; std::swap(x, y); Please give your answer for C++03, and if it still works in C++0x, even better! You are not

When I explicitly call rdd.cache, I can see from the spark console storage tab that only a fraction of the rdd is actually cached. My question is where are the remaining parts? How does Spark decide which part to leave in cache? The same question applies to the initial raw data read in by sc.textFile(). I understand these rdd's are automatically cached, even though the spark console storage table does not display any information on their cache status. Do we know how much of those are cached vs. missing? cache() is the same as persist(StorageLevel.MEMORY_ONLY) , and your amount of data probably