@nox_wave/hexlet-braingames/dist/games/balance.js

Brain Games. A set of mini-games.

'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 }; }

function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }

var minRandomInteger = 10;
var maxRandomInteger = 9999;

var sort = function sort(arr) {
  return [].concat(_toConsumableArray(arr)).sort();
};

var balance = function balance(num) {
  var iter = function iter(digits) {
    var minDigit = Math.min.apply(Math, _toConsumableArray(digits));
    var maxDigit = Math.max.apply(Math, _toConsumableArray(digits));
    var minIndex = digits.indexOf(minDigit);
    var maxIndex = digits.indexOf(maxDigit);
    var delta = maxDigit - minDigit;
    if (delta <= 1 || minDigit === maxDigit) {
      return sort(digits).join('');
    }
    var newDigits = digits.map(function (digit, idx) {
      if (idx === minIndex) return digit + 1;
      if (idx === maxIndex) return digit - 1;
      return digit;
    });
    return iter(newDigits);
  };
  return iter(('' + num).split('').map(function (d) {
    return Number.parseInt(d, 10);
  }));
};

exports.default = function () {
  var getGameData = function getGameData() {
    var num = (0, _utils2.default)(minRandomInteger, maxRandomInteger);
    var question = '' + num;
    var answer = balance(num);
    return (0, _hexletPairs.cons)(question, answer);
  };
  (0, _2.default)({
    instruction: 'Balance the given number.',
    getGameData: getGameData
  });
};
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