From 185ef9fcb0e59f13e9ee0ccb261693cdaddebab0 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Tue, 23 Feb 2021 21:07:19 +0800
Subject: import(solutions): Move leetcode solutions to subdir.

---
 works/solutions/leetcode/cpp/60.cpp | 44 +++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 works/solutions/leetcode/cpp/60.cpp

(limited to 'works/solutions/leetcode/cpp/60.cpp')

diff --git a/works/solutions/leetcode/cpp/60.cpp b/works/solutions/leetcode/cpp/60.cpp
new file mode 100644
index 0000000..f090355
--- /dev/null
+++ b/works/solutions/leetcode/cpp/60.cpp
@@ -0,0 +1,44 @@
+#include <string>
+#include <vector>
+
+using std::string;
+
+class Solution
+{
+public:
+    string getPermutation(int n, int k)
+    {
+        k--;
+        
+        string result;
+        result.reserve(n);
+
+        std::vector<char> nums;
+        nums.reserve(n);
+
+        for (int i = 1; i <= n; i++)
+        {
+            nums.push_back(i + '0');
+        }
+
+        n--;
+        int fac = 1;
+        for (int i = 2; i <= n; i++)
+        {
+            fac *= i;
+        }
+
+        while (n > 0)
+        {
+            const int index = k / fac;
+            k = k % fac;
+            result += nums[index];
+            nums.erase(nums.cbegin() + index);
+            fac /= n--;
+        }
+
+        result += nums.front();
+
+        return result;
+    }
+};
\ No newline at end of file
-- 
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