From a99870279f55130b2130f7a16f04d0ac5b219352 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Sun, 9 Aug 2020 16:47:21 +0800
Subject: Add problem 66 .

---
 cpp/66.cpp | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 cpp/66.cpp

(limited to 'cpp/66.cpp')

diff --git a/cpp/66.cpp b/cpp/66.cpp
new file mode 100644
index 0000000..40ce008
--- /dev/null
+++ b/cpp/66.cpp
@@ -0,0 +1,34 @@
+#include <vector>
+
+using std::vector;
+
+class Solution
+{
+public:
+    vector<int> plusOne(vector<int> &digits)
+    {
+        bool carry = true;
+        const auto end = digits.rend();
+        for (auto iter = digits.rbegin(); carry && iter != end; ++iter)
+        {
+            auto &digit = *iter;
+            digit += 1;
+            if (digit == 10)
+            {
+                digit = 0;
+                carry = true;
+            }
+            else
+            {
+                carry = false;
+            }
+        }
+
+        if (carry)
+        {
+            digits.insert(digits.cbegin(), 1);
+        }
+
+        return digits;
+    }
+};
-- 
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