Question

I am porting a JavaScript code to C++ .

Pseudo code :

if n = 1 then APPEND(orders, order)

JavaScript(order and orders are arrays) :

var order = new array();
var orders = new array();
//....
if (n == 1)
{
    orders[orders.length] = order.slice(); // append copy
}

I am using vectors instead of array in C++ .
The C++ code i think should be just :

vector<int> order;
vector<vector<int> > orders;
//.....
orders.push_back(order)

Is this code correct for the above psudeo and javascript code ?

Answer 1

You have a condition n == 1 I don’t know why you have skipped that in your C++ implementation.
in comments you said you are using slice() to make a copy of original list so you do also need to do the same in your C++ implementation.

vector< vector<int> > orders;
vector<int> order;
//and to clone and append
std::vector cloned;
std::copy(order.begin(), order.end(), std::back_inserter(cloned));
if(n == 1)
   orders.push_back(cloned);