c++ - 数组C++中最大和第二大数

Question

我用 C++ 编写了一段代码，用于查找数组中的最大和第二大元素。代码工作正常，但问题是第二大数字的位置没有更新。第二大数的值虽然正确，但位置不对。

    #include<iostream>
using namespace std;
void main()
{
    int DATA[10];
    int largestNumber, secondLargestNumber, loc1, loc2;
    cout << "Enter 10 numbers of array DATA" << endl;
    for (int i = 0; i < 10; i++)
    {
        cin >> DATA[i];
    }
    largestNumber = DATA[1];
    secondLargestNumber = DATA[2];
    loc1 = 1;
    loc2 = 2;
    if (largestNumber < secondLargestNumber)
    {
        largestNumber = DATA[2];
        secondLargestNumber = DATA[1];
    }
    for (int i = 2; i < 10; i++)
    {
        if (DATA[i]>largestNumber)
        {
            secondLargestNumber = largestNumber;
            largestNumber = DATA[i];
            loc1 = i;

        }
        else if (DATA[i]>secondLargestNumber)
        {
            secondLargestNumber = DATA[i];
            loc2 = i;
        }
    }
    cout << "Largest Number with location   :"<<largestNumber<<"    "<<loc1 << endl;
    cout << "Second Largest Number location     :" << secondLargestNumber<<"    "<<loc2 << endl;
    cin.get();
    cin.get();
}

Answer 1

我可以建议一个更简单的解决方案吗？

#include <functional>
#include <set>
#include <iostream>

int main() {
  std::set<int, std::greater<int>> s;
  int input;
  while(true) { // choose your stopping condition
    cin >> input;
    s.insert(input);
  }
  std::cout << (*s.begin()) << (*std::next(s.begin())) << std::endl;
}