From c5c5a802895048e21a1144b2517fc833514ce910 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Thu, 17 Sep 2020 18:57:32 +0800
Subject: Add problem 1370 .

---
 cpp/1370.cpp | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 cpp/1370.cpp

diff --git a/cpp/1370.cpp b/cpp/1370.cpp
new file mode 100644
index 0000000..9741d48
--- /dev/null
+++ b/cpp/1370.cpp
@@ -0,0 +1,45 @@
+#include <string>
+
+using std::string;
+
+class Solution
+{
+public:
+    string sortString(string s)
+    {
+        int count[26]{0};
+
+        for (auto c : s)
+        {
+            count[c - 'a']++;
+        }
+
+        int total_count = s.size();
+        string result;
+
+        while (total_count)
+        {
+            for (int i = 0; i < 26; i++)
+            {
+                if (count[i])
+                {
+                    count[i]--;
+                    total_count--;
+                    result.push_back(i + 'a');
+                }
+            }
+
+            for (int i = 25; i >= 0; i--)
+            {
+                if (count[i])
+                {
+                    count[i]--;
+                    total_count--;
+                    result.push_back(i + 'a');
+                }
+            }
+        }
+
+        return result;
+    }
+};
-- 
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