leetcode Excel Sheet Column Number
Excel Sheet Column Number 題目:https://leetcode.com/problems/excel-sheet-column-numbe
把excel表格的列轉化為10進位制的數,本質相當於把26進位制的數轉化為10進位制的數。
public static void main(String[] args) { String s="AB"; int result = titleToNumber(s); System.out.println(result); } public static int titleToNumber(String s) { int result=0; for(int i=s.length()-1;i>=0;i--){ char c = s.charAt(i); result+=(c-'A'+1)*Math.pow(26,s.length()-1-i); } return result; }
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