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authorYuqian Yang <crupest@crupest.life>2025-02-28 23:13:39 +0800
committerYuqian Yang <crupest@crupest.life>2025-02-28 23:13:39 +0800
commit99e2e923d0c77b02f3fb4ff648ea916954868606 (patch)
treeec8e03f6f2cd1ce43990fb4fe6cd631967d0237e /store/works/solutions/leetcode/cpp/17.04.cpp
parent1cee979f5d36b311a03cc7397a036ba11caf3d42 (diff)
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chore(store): move everything to store.
Diffstat (limited to 'store/works/solutions/leetcode/cpp/17.04.cpp')
-rw-r--r--store/works/solutions/leetcode/cpp/17.04.cpp21
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
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+++ 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;
+ }
+};