katas/Build Tower.js at master · yuniorlaureano/katas · GitHub

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function towerBuilder(nFloors) {

    var floors = [];
    var tower = "";
    var count = nFloors;
    var backSpace = "";
    var frontSpace = "";
    var lastFloor = 0;
    var nAstericks = 0;
    var nSpaces = 0;
    var astericks = "";


    lastFloor = nFloors + (nFloors -1);
    nAstericks = 1;

    for(var i = 1; i <= count; i++){

      nAstericks = (i == 1? 1 : nAstericks + 2);
      nSpaces = lastFloor - nAstericks;

      for(var j = 0; j < (nSpaces / 2); j++){

        backSpace += " ";
        frontSpace += " ";
      }

      for(var j = 0; j < nAstericks; j++){

        astericks += "*";
      }

      floors.push(backSpace + astericks +frontSpace);

      astericks = "";
      backSpace = "";
      frontSpace = "";
      tower = "";
    }


    return floors;
}