/// @file
/// @brief task A: Class Vector

#pragma once

#include <functional> // std::function
#include <iostream>   // std::cout, std::endl
#include <vector>     // std::vector

/// @todo implement a class 'Vector' according to the following specification:
///   - use a *private* member variable of type std::vector<double>
///   - provide 3 constructors:
///       1. passing a std::vector<double>
///          - the values will be copied over to the private member
///       2. passing a count 'N' and an interval specified by a 'start', and 'end' value
///          - fill the private member with 'N' equidistant samples from the interval
///       3. passing a count 'N' and a generator function in form of a callable std::function<double()>
///           - fill the private member with 'N' samples obtained from the generator/callable
///   - member function print():
///     - prints all elements in the private member to the console

class Vector {
  std::vector<double> data_;
public:
  Vector(std::vector<double> data) : data_(data) {}
  Vector(double start, double end, unsigned int N) {
    double step = (end - start) / (N - 1);
    for (unsigned int i = 0; i < N; ++i) {
      data_.push_back(start + i * step);
    }
  }
  Vector(unsigned int N, std::function<double()> generator) {
    for (unsigned int i = 0; i < N; ++i) {
      data_.push_back(generator());
    }
  }
  void print() {
    std::cout << "[";
    for (unsigned int i = 0; i < data_.size(); ++i) {
      std::cout << data_[i];
      if (i < data_.size() - 1) {
        std::cout << ", ";
      }
    }
    std::cout << "]" << std::endl;
  }
};