x/masx200_leetcode_test/excel-sheet-column-number/index.ts
1234567export default function titleToNumber(columnTitle: string): number { return columnTitle.length === 1 ? columnTitle.charCodeAt(0) - "A".charCodeAt(0) + 1 : titleToNumber(columnTitle.at(-1) ?? "") + 26 * titleToNumber(columnTitle.slice(0, -1));}