100 doors

const getFinalOpenedDoors=numDoors=> {
let doors = [];
let i = 1, iSquared = i*i;

  while (iSquared <= numDoors) {
    doors.push(iSquared);
    i++; iSquared = i*i;
  }

  return doors;
}

// This algorithm aims to find the number of opened doors in the end of the search through the 100 doors. Rosetta code challenge, interview preparation.