function subsets(nums: number[]): number[][] {
  const limit = Math.pow(2,nums.length)
  const resp = []
  for(let i = 0; limit  > i; i++){
    const bin = i.toString(2)
    if(!bin.includes('1')){
      resp.push([])
    } else {
      const reverseBin = bin.split('').reverse()
      const arr = []
      reverseBin.forEach( (num, index) => {
        if( num == '1'){
          arr.push(nums[index])
        }
      })
      resp.push(arr)
    }
  }
  return resp
}

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