Leetcode Note: Go - Excel Sheet Column Title

const ALPHABETS = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"

func reverse(b []byte){
    for i, j := 0, len(b)-1; i < j; i, j = i + 1, j - 1{
        b[i] , b [j] = b[j], b[i]
    } 
}

func convertToTitle(n int) string {
    var b []byte
    for ; n > 0; n = (n - 1) / 26 {
        b = append(b, ALPHABETS[(n - 1) % 26])
    }
    reverse(b)
    return string(b)
}