stack

问题 In C#, is there a way to push one Stack onto another Stack without iterating through the stack elements? If not, is there a better data structure I should be using? In Java you can do: stack1.addAll(stack2) I was hoping to find the C# analogue... 回答1: 0. Safe Solution - Extension Method public static class Util { public static void AddAll<T>(this Stack<T> stack1, Stack<T> stack2) { T[] arr = new T[stack2.Count]; stack2.CopyTo(arr, 0); for (int i = arr.Length - 1; i >= 0; i--) { stack1.Push

问题 In C#, is there a way to push one Stack onto another Stack without iterating through the stack elements? If not, is there a better data structure I should be using? In Java you can do: stack1.addAll(stack2) I was hoping to find the C# analogue... 回答1: 0. Safe Solution - Extension Method public static class Util { public static void AddAll<T>(this Stack<T> stack1, Stack<T> stack2) { T[] arr = new T[stack2.Count]; stack2.CopyTo(arr, 0); for (int i = arr.Length - 1; i >= 0; i--) { stack1.Push

问题 I'm going crazy trying to figure out this error message that has no obvious connection to reality/my code. I've been searching on here and come to one conclusion: you're going to hate the pointer hidden by typedef. Sorry, it's out of my control--prof provided the code that way. I'm editing the code as specified in the problem. I'm popping full nodes to avoid malloc calls on each push function and storing them in a secondary stack. The MakeEmptyS function initializes a Stack with INITIAL_SIZE

问题 #include <iostream> #include <sstream> #include <stack> #include <limits> #include <string> using namespace std; int main() { string input; cout << "Enter a postfix expression: " << endl; getline(cin, input); int operand1, operand2, result,number; stack<char>operation; stringstream temp; int i=0; while (i < input.length()) { if (isdigit(input[i])) { operation.push(input[i]); } else { operand2 = operation.top(); temp << operation.top(); operation.pop(); operand1 = operation.top(); temp <<

问题 When a program calls a function, in which type of data structure is memory allocated for the variables in that function? Heap or stack? why? In my opinion it should store on stack because they are not necessarily reference types. But Where I read the answer, it is stated that they store on heap and free after function returns a value. 回答1: It is a little more complicated than that and the fact that the stack and heap are used are really implementation details. It makes more sense to talk

问题 void gctinp (char *inp, int siz) { puts ("Input value: "); fgets (inp, siz, stdin); printf ("buffer3 getinp read %s", inp); } From what I've read, fgets is supposed to be used when you want to limit the size of input. So this code shouldn't be vulnerable right? It is being called like so: int main (int argc, char *argv[]) { char buf[16]; getinp (buf, sizeof (buf)); display (buf); printf ("buffer3 done\n"); } Thanks for your time. 回答1: You won't strike buffer overflow problems if you enter

问题 So I am currently learning about stack frames, and I wanted to experiment printing the stack frame (manually) of a function. I have the following picture in mind of a stack frame (I may be wrong): | | 0xffff0fdc +--------------------------------+ | ... | 0xffff0fd8 +--------------------------------+ | parameter 2 | 0xffff0fd4 +--------------------------------+ | parameter 1 | 0xffff0fd0 +--------------------------------+ | return address | 0xffff0fcc +--------------------------------+ | local

问题 Won't the processor cause a TRAP to the operating system if the stack size limit is reached(thus preventing a stackoverflow :P) 回答1: I believe Windows does have a stack that grows when you reach the end. In the Visual Studio compiler the code responsible for this is in the chkstk.obj module. Since this code is open-source I can post it here: ;*** ;_chkstk - check stack upon procedure entry ; ;Purpose: ; Provide stack checking on procedure entry. Method is to simply probe ; each page of memory

问题 I need a collection that is limited in its size. It has to be similar to a circular buffer. I think that the fastest way to describe it would be by making an example. Suppose I have an instance of this "special" queue, of size 4. This is the queue initially: 6 3 9 2 If I push something into it, it has to add it at the beginning, remove the last element and return its value, so, if I add 3 it would become: 3 6 3 9 and returns 2 I hope I've been clear... A general implementation is sufficient,

问题 I've been going over some of the many coding interview questions. I was wondering how you would go about implementing a queue using two stacks in Python? Python is not my strongest language so I need all the help I can get. Like the enqueue, dequeue, and front functions. 回答1: class Queue(object): def __init__(self): self.instack=[] self.outstack=[] def enqueue(self,element): self.instack.append(element) def dequeue(self): if not self.outstack: while self.instack: self.outstack.append(self