From 74c2c5ba26a510704297484ed86167681032d57b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=94=90=E6=A0=91=E6=A3=AE?= <14021051@buaa.edu.cn>
Date: Fri, 28 Sep 2018 23:24:27 +0800
Subject: [PATCH] Create 168. Excel Sheet Column Title.md

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 168. Excel Sheet Column Title.md | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 168. Excel Sheet Column Title.md

diff --git a/168. Excel Sheet Column Title.md b/168. Excel Sheet Column Title.md
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+++ b/168. Excel Sheet Column Title.md	
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+# [168. Excel Sheet Column Title](https://leetcode.com/problems/excel-sheet-column-title/description/)
+# 思路
+题目的要求相当于是十进制转二十六进制。用一个循环每次对n取模然后n除26进入下一次循环即可。   
+不过需要注意的是，题目给的是1-26对应A-Z而不是0-25对应A-Z，所以每次循环时都要对n作自减操作。
+# C++
+```
+class Solution {
+public:
+    string convertToTitle(int n) {
+        string res;
+        while (n > 0) {
+            res = (char)('A' + (--n) % 26) + res;
+            n /= 26;
+        }
+        return res;
+    }
+};
+```