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
1 /************************************************************************* 2 > File Name: LeetCode171.c 3 > Author: Juntaran 4 > Mail: Jacinthmail@gmail.com 5 > Created Time: 2016年05月10日 星期二 04时02分20秒 6 ************************************************************************/ 7 8 /************************************************************************* 9 10 Excel Sheet Column Number 11 12 Related to question Excel Sheet Column Title 13 14 Given a column title as appear in an Excel sheet, 15 return its corresponding column number. 16 17 For example: 18 19 A -> 1 20 B -> 2 21 C -> 3 22 ... 23 Z -> 26 24 AA -> 27 25 AB -> 28 26 27 ************************************************************************/ 28 29 #include "stdio.h" 30 31 int titleToNumber(char* s) 32 { 33 int sum = 0; 34 int i; 35 for( i=0; i<strlen(s); i++ ) 36 { 37 sum = 26*sum + (s[i]-'A'+1); 38 } 39 printf("%d ",sum); 40 return sum; 41 } 42 43 int main() 44 { 45 char* s = "AB"; 46 titleToNumber(s); 47 return 0; 48 }