add: 220512-CN [cpp]

cpp/2205/220512-CN.cpp

@@ -0,0 +1,28 @@
+#include <vector>
+#include <string>
+
+/**
+ * 944. Delete Columns to Make Sorted
+ * You are given an array of n strings strs, all of the same length.
+ * You want to delete the columns that are not sorted lexicographically. In the above example (0-indexed), columns 0 ('a', 'b', 'c') and 2 ('c', 'e', 'e') are sorted while column 1 ('b', 'c', 'a') is not, so you would delete column 1.
+ * Return the number of columns that you will delete.
+ */
+
+class Solution {
+public:
+	static int minDeletionSize(const std::vector<std::string>& s) {
+		auto n = s.front().length(), m = s.size();
+		int cnt = 0;
+		while (n--) {
+			bool ok = true;
+			for (int i = m - 1; i--; ) {
+				if (s[i][n] > s[1 + i][n]) {
+					ok = false;
+					break;
+				}
+			}
+			cnt += !ok;
+		}
+		return cnt;
+	}
+};

cpp/2205/CMakeLists.txt

@@ -3,4 +3,4 @@ PROJECT(2205)
 
 SET(CMAKE_CXX_STANDARD 23)
 
-ADD_EXECUTABLE(2205 220511.cpp)
+ADD_EXECUTABLE(2205 220512-CN.cpp)