LeetCode Excel Sheet Column Title
2015-03-08 17:36
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1.题目
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
2.解决方案1
class Solution { public: string convertToTitle(int n) { string result; string array[26] = {"A", "B", "C", "D", "E", "F" , "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"}; while(n > 0){ int indexNum = n % 26; if(indexNum == 0){ indexNum = 26; } result = array[indexNum - 1] + result; n = (n-1) / 26; } return result; } };
思路:就是26进制的概念,跟这题类似《Reverse Integer 反转一个int数》
http://www.waitingfy.com/archives/1611
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