add: 220517-CN [cpp]

cpp/2205/220517-CN.cpp

@@ -0,0 +1,31 @@
+#include <vector>
+#include <string>
+#include <cstdio>
+
+class Solution {
+public:
+    static bool isAlienSorted(const std::vector<std::string>& words, const std::string& order) {
+        int dict[256]{};
+        for (int i = 0; i < order.length(); ++i) {
+            dict[order[i]] = i;
+        }
+
+        auto strcmp = [&](const std::string& x, const std::string& y) {
+            const int xl = x.length(), yl = y.length(), kl = std::min(xl, yl);
+            for (int i = 0; i < kl; ++i)
+                if (dict[x[i]] - dict[y[i]])
+                    return dict[x[i]] - dict[y[i]];
+            return xl - yl;
+        };
+
+        for (int i = 1; i < words.size(); ++i)
+            if (strcmp(words[i - 1], words[i]) > 0)
+                return false;
+        return true;
+    }
+};
+
+int main() {
+    std::printf("%s\n", Solution::isAlienSorted({"hello", "leetcode"}, "hlabcdefgijkmnopqrstuvwxyz") ? "yes" : "no");
+    return 0;
+}

cpp/2205/CMakeLists.txt

@@ -3,4 +3,4 @@ PROJECT(2205)
 
 SET(CMAKE_CXX_STANDARD 23)
 
-ADD_EXECUTABLE(2205 220516-CN.cpp)
+ADD_EXECUTABLE(2205 220517-CN.cpp)