export function removeDuplicates(arr: number[]): number[] {
  if (arr.length === 0) {
    throw new Error("Le tableau est vide.");
  }

  const uniqueArray: number[] = [];
  arr.forEach((num) => {
    if (!uniqueArray.includes(num)) {
      uniqueArray.push(num);
    }
  });
  return uniqueArray;
}