add: 221023

cpp/2210/221023.cpp

@@ -0,0 +1,26 @@
+#include <vector>
+
+/**
+ * 645. Set Mismatch
+ *
+ * You have a set of integers s, which originally contains all the numbers from 1 to n. Unfortunately, due to some error, one of the numbers in s got duplicated to another number in the set, which results in repetition of one number and loss of another number.
+ * You are given an integer array nums representing the data status of this set after the error.
+ * Find the number that occurs twice and the number that is missing and return them in the form of an array.
+ */
+
+class Solution {
+public:
+	static std::vector<int> findErrorNums(const std::vector<int>& n) {
+		std::vector<bool> s(n.size() + 1);
+		int x = 0;
+		for (int i : n) {
+			if (s[i])
+				x = i;
+			s[i] = true;
+		}
+		for (int i = 1; i <= s.size(); ++i)
+			if (!s[i])
+				return {x, i};
+		return {};
+	}
+};

cpp/2210/CMakeLists.txt

@@ -3,4 +3,4 @@ PROJECT(2210)
 
 SET(CMAKE_CXX_STANDARD 23)
 
-ADD_EXECUTABLE(2210 221023-CN.cpp)
+ADD_EXECUTABLE(2210 221023.cpp)