pub fn convert_to_title(column: i32) -> String {
  let radix = 26;

  let mut column = column as u32;
  let mut result = vec![];

  while column != 0 {
    // Subtract 1 so the number 0 would equal the value 1.
    let value = (column - 1) % radix;
    column = (column - 1) / radix;

    // Add 65 so the modulo'd value will be in the 65 through 90 character range
    // (upppercase letters).
    result.push(char::from_u32(value + 65).unwrap());
  }

  result.into_iter().rev().collect::<String>()
}