Ember computed sort

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle'
});

application.template.hbs

{{outlet}}

index.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  data: null,
  sortProperties: [],
  
  arrOne: Ember.computed.alias('data'),
  arrTwo: Ember.computed.sort('data', 'sortProperties'),
  
  init: function () {
    const data = [];
    const rows = 500;
    for (let i = 0; i < rows; i++) {
			data.push(i + 1);
    }
    this.set('data', data);
  },
});

index.template.hbs

<div class="columns">
  <ol class="column">
    {{#each arrOne as |item|}}
      <li>{{item}}</li>
    {{/each}}
  </ol>

  <ol class="column">
    {{#each arrTwo as |item|}}
      <li>{{item}}</li>
    {{/each}}
  </ol>
</div>

<style>
.columns {
	display: flex;
  flex-direction: row;
}
.column {
	flex-grow: 1;
}
</style>

twiddle.json

{
  "version": "0.5.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.2.0/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember-template-compiler.js"
  }
}