add: 221029-CN

cpp/2210/221029-CN.cpp

@@ -0,0 +1,21 @@
+#include <vector>
+#include <string>
+#include <algorithm>
+
+/**
+ * 1773. Count Items Matching a Rule
+ *
+ * You are given an array items, where each items[i] = [typei, colori, namei] describes the type, color, and name of the ith item. You are also given a rule represented by two strings, ruleKey and ruleValue.
+ * The ith item is said to match the rule if one of the following is true:
+ * - ruleKey == "type" and ruleValue == typei.
+ * - ruleKey == "color" and ruleValue == colori.
+ * - ruleKey == "name" and ruleValue == namei.
+ * Return the number of items that match the given rule.
+ */
+
+class Solution {
+public:
+	static int countMatches(const std::vector<std::vector<std::string>>& i, const std::string& k, const std::string& v) {
+		return std::count_if(i.begin(), i.end(), [&](auto&& x) { return x[(4 - k[0]) & 3] == v; });
+	}
+};

cpp/2210/CMakeLists.txt

@@ -3,4 +3,4 @@ PROJECT(2210)
 
 SET(CMAKE_CXX_STANDARD 23)
 
-ADD_EXECUTABLE(2210 221029.cpp)
+ADD_EXECUTABLE(2210 221029-CN.cpp)