From 2f6892459fabb475df9cd7edb140fd2e4c4a0a8d Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Fri, 24 Jul 2020 16:09:53 +0800
Subject: Add problem 231 .

---
 cpp/231.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 cpp/231.cpp

(limited to 'cpp')

diff --git a/cpp/231.cpp b/cpp/231.cpp
new file mode 100644
index 0000000..8861e09
--- /dev/null
+++ b/cpp/231.cpp
@@ -0,0 +1,10 @@
+#include <bitset>
+
+class Solution {
+public:
+    bool isPowerOfTwo(int n) {
+        if (n <= 0) return false;
+        std::bitset<sizeof(n) * 8> bits(n);
+        return bits.count() == 1;
+    }
+};
-- 
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