export function swapCase(text: string): string {
  let newText = "";
  for (const c of text) {
    let newC = "";
    if (c >= "a" && c <= "z") {
      newC = c.toUpperCase();
    } else {
      newC = c.toLowerCase();
    }
    newText += newC;
  }

  return newText;
}