c++中类似Python的切片操作

#include <iostream>
#include <vector>

template<typename T>
std::vector<T> slice(const std::vector<T>& vec, int start, int end) {
    std::vector<T> result;
    for (int i = start; i < end; ++i) {
        result.push_back(vec[i]);
    }
    return result;
}

int main() {
    std::vector<int> nums = {1, 2, 3, 4, 5};
    std::vector<int> sliced = slice(nums, 1, 4);

    for (const auto& num : sliced) {
        std::cout << num << " ";
    }

    return 0;
}

#include <iostream>
#include <boost/range.hpp>
#include <boost/range/algorithm.hpp>

int main() {
    int nums[] = {1, 2, 3, 4, 5};
    auto sliced = boost::range::sub_range(nums, 1, 4);

    for (const auto& num : sliced) {
        std::cout << num << " ";
    }

    return 0;
}

#include <iostream>
#include <vector>

int main() {
    std::vector<int> nums = {1, 2, 3, 4, 5};
    std::vector<int> sliced(nums.begin() + 1, nums.begin() + 4);

    for (const auto& num : sliced) {
        std::cout << num << " ";
    }

    return 0;
}