leetcode_Excel Sheet Column Title
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描述:
Given a positive integer, return its corresponding column title as appear in an Excel sheet.
For example:
1 -> A 2 -> B 3 -> C ... 26 -> Z 27 -> AA 28 -> AB
思路:
比字母串转换成数字稍稍复杂些,每次获取字符的时候temp=n-1;是一个需要留意的地方,否则很容易搞错
代码:
public String convertToTitle(int n) { char ch; StringBuilder sb=new StringBuilder(); int temp=0; while(n!=0) { temp=n-1; ch=(char)(temp%26+'A'); n=temp/26; sb.insert(0, ch); } return sb.toString(); }
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