如何将每个元素排入唯一指针的向量中？(C++)

#include <iostream>
#include <vector>

std::vector<int*> uniqueVector;

bool isElementExists(int* element) {
    for (int* ptr : uniqueVector) {
        if (ptr == element) {
            return true;
        }
    }
    return false;
}

int main() {
    int* element1 = new int(1);
    if (!isElementExists(element1)) {
        uniqueVector.push_back(element1);
    }

    int* element2 = new int(2);
    if (!isElementExists(element2)) {
        uniqueVector.push_back(element2);
    }

    // 添加更多元素...

    // 打印向量中的元素
    for (int* ptr : uniqueVector) {
        std::cout << *ptr << " ";
    }
    std::cout << std::endl;

    // 释放内存
    for (int* ptr : uniqueVector) {
        delete ptr;
    }
    uniqueVector.clear();

    return 0;
}