function groupByRange(numbers: number[], rangeSize: number): Record<string, number[]> {
  
  const numbersSorted = [...numbers].sort((a,b) => a-b);
  const obj = {};
  for(let i = 0; i < numbersSorted.at(-1) + rangeSize; i+=rangeSize){
    const array = numbers.filter(x => x >= i && x < i + rangeSize)
    if(array.length){
      obj[`${i}-${i+rangeSize}`] = array;
    }
  }
  return obj;
}

// No modificar: necesario para evaluar el resultado.
export { groupByRange };