replace some more charAt cases with bracket access
#6241
| Job | Run time |
|---|---|
| 1m 53s | |
| 41s | |
| 2m 41s | |
| 46s | |
| 46s | |
| 42s | |
| 40s | |
| 42s | |
| 45s | |
| 51s | |
| 54s | |
| 45s | |
| 1m 44s | |
| 1m 30s | |
| 50s | |
| 41s | |
| 1m 2s | |
| 1m 21s | |
| 2m 26s | |
| 48s | |
| 55s | |
| 47s | |
| 58s | |
| 1m 38s | |
| 1m 37s | |
| 54s | |
| 48s | |
| 30m 5s |