很简单的26进制问题 int titleToNumber(char* s) { int sum=0,temp; char *p=s; while(*p!='\0'){ sum=sum*26+(*p-'A'+1); p++; } return sum; }…

171. Excel表列序号 171. Excel Sheet Column Number 题目描述 给定一个 Excel 表格中的列名称,返回其相应的列序号. 每日一算法2019/5/25Day 22LeetCode171. Excel Sheet Column Number 例如, A -> 1 B -> 2 C -> 3 ... Z -> 26 AA -> 27 AB -> 28 ... 示例 1: 输入: "A" 输出: 1 示例 2: 输入…

题目描述: Excel Sheet Column Title 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 Excel Sheet Column Number Related to question Exc…

Excel Sheet Column Number Related to question Excel Sheet Column Title Given a column title as appear in an Excel sheet, return its corresponding column number. For example: A -> 1 B -> 2 C -> 3 ... Z -> 26 AA -> 27 AB -> 28   class Solu…

168 - Excel Sheet Column Title 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 Solution: 由于A->1,  计算s的末尾时需先减去1 class Solution…

100. Same Tree /** * Definition for a binary tree node. * function TreeNode(val) { * this.val = val; * this.left = this.right = null; * } */ /** * @param {TreeNode} p * @param {TreeNode} q * @return {boolean} */ var isSameTree = function(p, q) { if(p…

题目 //像10进制一样进行 转换   只是要从0开始记录 class Solution { public: string convertToTitle(int n) { char a; string str=""; ){ )%; str = char(tmp+'A') + str; n = (n-)/; } return str; } }; 171  Excel Sheet Column Number class Solution { public: int titleToNumbe…

题意:天啊!我竟然看不懂题意,还去翻别人的代码才懂!给定一个字符串,求该字符串二十六进制的总值. 思路:'A'~'Z'就是1到26,"AA"=26+1=27,"BA"=26*2+1=53,"CBA"=26*26*3+26*2+1.相当于321(十进制),那么就是10*10*3+10*2+1,说第3条式子,C在第3位,在第1位时就是1~26的值了,也就是3,在第2位时就是将3*26了,再第3位时就是将3*26*26了:同理B就是2*26啦,A就是1…

Excel Sheet Column Number 本题收获: 1.对于字符串中字母转为ASIIC码:string s ;res = s[i]-'A'; 这个res就是数字s[i]-'A'是对ASIIC的操作. 2.对于进制的转换:利用for循环 ,%,/,数组在完成. 3.2中的数组都是从左到右的,在此题中不是按照从高位到低位. 题目: elated to question Excel Sheet Column Title Given a column title as appear in a…

171. Excel Sheet Column Number Easy Given a column title as appear in an Excel sheet, return its corresponding column number. For example: A -> 1 B -> 2 C -> 3 ... Z -> 26 AA -> 27 AB -> 28 ... Example 1: Input: "A" Output: 1 E…