function palindromeRearranging(inputString: string): boolean {
  const counts = new Map<string, number>();

  for (const ch of inputString) {
    counts.set(ch, (counts.get(ch) ?? 0) + 1);
  }

  let c = 0;
  for (const v of counts.values()) {
    if (v % 2 !== 0) {
      c++;
    }
  }

  return c <= 1;
}