168. Excel Sheet Column Title
2021-08-12 本文已影响0人
jluemmmm
excel表列名称,给定整数 columnNumber,返回在 Excel表中相对应的列名称。
- 时间复杂度 O(N),空间复杂度O(1)
- Runtime: 68 ms, faster than 82.33%
- Memory Usage: 38.9 MB, less than 9.05%
/**
* @param {number} columnNumber
* @return {string}
*/
var convertToTitle = function(columnNumber) {
let res = '';
while (columnNumber > 0) {
columnNumber--;
let cur = columnNumber % 26;
columnNumber = Math.floor(columnNumber / 26);
res = String.fromCharCode(65 + cur) + res;
}
return res;
};