export function countPairsWithDiffK(numbers: number[], k: number): number {
  // Escribe tu solución aquí
  const pairs: number[][] = [];
  
  numbers.forEach((number, index) => {
    numbers.slice(index + 1).forEach(nextNumber => {
      if(
          (Math.abs(number - nextNumber) === k) && 
          !pairs.toString().includes([number,nextNumber].toString())
        ) {
          pairs.push([number,nextNumber]);
        }
    })
   
  });
  
  return pairs.length;
}