{"version":"1.0","type":"rich","title":"Sample problems 2-27","description":"This example presents five JavaScript practice problems in the browser console, with instructions displayed in the page. It demonstrates array iteration, filtering, sorting, and modular arithmetic on state objects with names, IDs, and population data. The code uses plain JavaScript array methods such as `forEach`, `includes`, and `sort`, along with `console.log` for output. No SVG or D3 visualization is involved; the exercises focus on fundamental data manipulation and logic skills using D3 v4 only as a script dependency.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-677a780936eec8b3080145dc037198d9?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}