| Platform Name | ACOS server |
| Exercise Type | PCEX Activity |
| Language | Java |
| Description | |
| Keywords | |
| URL | https://acos.cs.vt.edu |
| Author | Mohammad Hassany |
| Institution | University of Pittsburgh |
| Iframe URL | https://acos.cs.vt.edu/html/acos-pcex/acos-pcex-examples/strings_charAt__664e272e91363872f0ba33bd |
| LTI URL | https://acos.cs.vt.edu/lti/acos-pcex/acos-pcex-examples?resource_name=strings_charAt__664e272e91363872f0ba33bd |
| LTI Instructions URL | https://acos.cs.vt.edu/lti/instructions |