diff options
Diffstat (limited to 'store/works/solutions/leetcode/cpp/17.04.cpp')
| -rw-r--r-- | store/works/solutions/leetcode/cpp/17.04.cpp | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/store/works/solutions/leetcode/cpp/17.04.cpp b/store/works/solutions/leetcode/cpp/17.04.cpp new file mode 100644 index 0000000..07ac7ae --- /dev/null +++ b/store/works/solutions/leetcode/cpp/17.04.cpp @@ -0,0 +1,21 @@ +#include <vector>
+
+using std::vector;
+
+class Solution
+{
+public:
+ int missingNumber(vector<int> &nums)
+ {
+ const int size = nums.size();
+ const int sum = size * (size + 1) / 2;
+
+ int real_sum = 0;
+ for (auto i : nums)
+ {
+ real_sum += i;
+ }
+
+ return sum - real_sum;
+ }
+};
|