diff --git a/231. Power of Two.cpp b/231. Power of Two.cpp
new file mode 100644
index 0000000..4bdd369
--- /dev/null
+++ b/231. Power of Two.cpp	
@@ -0,0 +1,7 @@
+class Solution {
+public:
+    bool isPowerOfTwo(int n) {
+        if (n <= 0) return false;
+        return (n & (n - 1)) == 0;
+    }
+};