Create count-asterisks.cpp

Author: kamyu104

C++/count-asterisks.cpp

@@ -0,0 +1,20 @@
+// Time:  O(n)
+// Space: O(1)
+
+// string
+class Solution {
+public:
+    int countAsterisks(string s) {
+        int result = 0, cnt = 0;
+        for (const auto& c : s) {
+            if (c == '|') {
+                cnt = (cnt + 1) % 2;
+                continue;
+            }
+            if (c == '*' && cnt == 0) {
+                ++result;
+            }
+        }
+        return result;
+    }
+};