hexlet-braingames-by-mput/dist/games/progressionGame.js

Learning Hexlet.io node.js project implementation.

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _hexletPairs = require('hexlet-pairs');

var _ = require('..');

var _2 = _interopRequireDefault(_);

var _utils = require('../utils');

var _utils2 = _interopRequireDefault(_utils);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var description = 'What number is missing in this progression?';

var getQueAndAnsw = function getQueAndAnsw() {
  var progElementsCount = 10;
  var skippedElmPos = (0, _utils2.default)(10) - 1;
  var firstElm = (0, _utils2.default)(10);
  var step = (0, _utils2.default)(5);

  var iterQnA = function iterQnA(currentElem, currentElmPos, progression, hiddenElm) {
    if (currentElmPos === progElementsCount) {
      return (0, _hexletPairs.cons)(progression, hiddenElm);
    }
    var nextElm = currentElem + step;
    var nextElmPos = currentElmPos + 1;
    var separator = currentElmPos === 0 ? '' : ' ';

    if (currentElmPos === skippedElmPos) {
      return iterQnA(nextElm, nextElmPos, '' + progression + separator + '..', String(currentElem));
    }
    return iterQnA(nextElm, nextElmPos, '' + progression + separator + currentElem, hiddenElm);
  };

  return iterQnA(firstElm, 0, '', '');
};

exports.default = function () {
  return (0, _2.default)(description, getQueAndAnsw);
};
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