Leecode第一题,用c++写
class Solution {
public:
vector<int> twoSum(vector<int>& nums, int target) {
int n = nums.size();
for (int i = 0; i < n; ++i) {
for (int j = i + 1; j < n; ++j) {
if (nums[i] + nums[j] == target) {
return {i, j};
}
}
}
return {};
}
};
第三行的vertor和第4行的.size()分别是什么意思?刚学c++没多久,语法不太熟悉