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LeetCode 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 public class Solution { 2 public int titleToNumber(String s) { 3 if (s == null || s.equals("")) { 4 return 0; 5 } 6 int ret=0; 7 while (s.length() > 0) { 8 int y=s.length()-1; 9 int first=s.charAt(0)-‘A‘+1;10 ret = (int) (ret + first * Math.pow(26, y));11 s = s.substring(1);12 }13 return ret;14 }15 }
LeetCode Excel Sheet Column Number
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