leetcode-go/leetcode/easy/171.go

package main

func titleToNumber(s string) int {
	res := 0
	for base, i := 1, len(s)-1; i >= 0; base, i = base*26, i-1 {
		res += base * int(s[i]-'A'+1)
	}
	return res
}

// func main() {
// 	fmt.Println(titleToNumber("WV"))
// }