brain-games_216/dist/games/brain-progression.js

Brain-games

'use strict';

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

var _ = require('..');

var numberProgression = function numberProgression(start, step, n) {
  if (n > 1) {
    return start + step * (n - 1);
  }
  return start;
};

var generateProgression = function generateProgression(start, step, hidden, n) {
  var progression = '';
  for (var i = 1; i <= n; i += 1) {
    if (i === hidden) {
      progression += '.. ';
    } else {
      progression += numberProgression(start, step, i) + ' ';
    }
  }
  return progression;
};

var gameProgression = function gameProgression() {
  var description = 'What number is missing in this progression?';
  var getGame = function getGame() {
    var start = (0, _.numberRandom)();
    var step = (0, _.numberRandom)();
    var hidden = (0, _.numberRandom)();
    var progressionLength = 10;
    var question = generateProgression(start, step, hidden, progressionLength);
    var answer = numberProgression(start, step, hidden);
    var gameDateArr = [question, answer];
    return gameDateArr;
  };
  (0, _.games)(description, getGame);
};

exports.default = gameProgression;
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