From af77d1adc18883a4f0575d9aee7e539c4c320f82 Mon Sep 17 00:00:00 2001
From: RequireSun <kelvinlpsun@hotmail.com>
Date: Fri, 28 Dec 2018 22:33:25 +0800
Subject: [PATCH] Create README.zh-CN.md (#267)

---
 src/algorithms/math/factorial/README.zh-CN.md | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 src/algorithms/math/factorial/README.zh-CN.md

diff --git a/src/algorithms/math/factorial/README.zh-CN.md b/src/algorithms/math/factorial/README.zh-CN.md
new file mode 100644
index 00000000..89bcff1f
--- /dev/null
+++ b/src/algorithms/math/factorial/README.zh-CN.md
@@ -0,0 +1,27 @@
+# 阶乘
+
+在数学上, 一个正整数 `n` 的阶乘 (写作 `n!`), 就是所有小于等于 `n` 的正整数的乘积. 比如:
+
+```
+5! = 5 * 4 * 3 * 2 * 1 = 120
+```
+
+| n     | n!                          | 
+| ----- | --------------------------: |
+| 0     | 1                           |
+| 1     | 1                           |
+| 2     | 2                           |
+| 3     | 6                           |
+| 4     | 24                          |
+| 5     | 120                         |
+| 6     | 720                         |
+| 7     | 5 040                       |
+| 8     | 40 320                      |
+| 9     | 362 880                     |
+| 10    | 3 628 800                   |
+| 11    | 39 916 800                  |
+| 12    | 479 001 600                 |
+| 13    | 6 227 020 800               |
+| 14    | 87 178 291 200              |
+| 15    | 1 307 674 368 000           |
+