Leecode＜每日一题＞错误的集合

题目链接：https://leetcode-cn.com/problems/set-mismatch/

思路：遍历标记即可

bool check[10010] = { false };
vector<int> findErrorNums(vector<int>& nums) {
    vector<int> rt;
    for (int i = 0; i < nums.size(); i++)
    {
        if (check[nums[i]]) rt.push_back(nums[i]);
        else  check[nums[i]] = true;
    }
    for (int i = 1; i <= nums.size(); i++)
    {
        if (!check[i])
        {
            rt.push_back(i);
            break;
        }
    }
    return rt;
}