int i;queue里面没有find，所以自己写一个吧，比如可以用下面这种，一个一个查，把查到的值记录下来。 for(i =0; i < q.size(); i ++){ if(num == q[i]) break;}if(i == q.size()){cout << "num doesn't exist;"<<endl;}else{cout << "num is the "<<i+1<<"th...
include <iostream> include <deque> using namespace std;int main (){ deque<int> mydeque;deque<int>::iterator it;int num=3;for (int i=1; i<=5; i++) mydeque.push_back(i);cout << "mydeque contains:";it = mydeque.begin();while (it != mydeque.end())if(*it ==...