171. Excel Sheet Column Number
2017-04-23 22:53
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Given a column title as appear in an Excel sheet, return its corresponding column number.
For example:
这题目使用递归就可以,但需要注意数组不是从0开始的。
For example:
数字 | 字母 | |
---|---|---|
A | -> | 1 |
B | -> | 2 |
Z | -> | 26 |
AA | -> | 27 |
/** * @param {string} s * @return {number} */ var titleToNumber = function(s) { if(s.length<2)return (s.charCodeAt(0)-64) ; else return titleToNumber(s.slice(0,s.length-1))*26+titleToNumber(s.slice(-1)); };
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