双指针

C++ 代码

class Solution {
public:

    vector<int> findNumbersWithSum(vector<int>& nums, int target) {
        sort(nums.begin(),nums.end());
        for(int i = 0 ,j = nums.size() - 1; i <j;){
            if(nums[i] +nums[j] == target)
               return  vector<int>{nums[i],nums[j]};
            else if(nums[i] + nums[j] < target)
                i++;
            else 
                j--;
        }
    }
};blablabla

哈希表

C++ 代码

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