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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
Credits:
Special thanks to @ts for adding this problem and creating all test cases.
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c code:
int titleToNumber(char* s) {
int size = strlen(s);
int ret = 0;
for(int i=0;i<size;i++) {
ret = ret * 26 + s[i] - 'A' + 1;
}
return ret;
}LeetCode:Excel Sheet Column Number
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原文地址：http://blog.csdn.net/itismelzp/article/details/51473894
