How many valid JSON strings fit in 100 characters? What does a statistically random JSON value look like? This project seeks to find answers to these gripping questions and more.
To narrow the scope of the question, I'm only considering the 95 characters that can be typed on a standard English keyboard. The JSON strings being counted may certainly contain escaped unicode characters, but they won't contain them in their raw form.
| Length | Valid JSON strings | Size of string space | Percent valid | Time to compute |
|---|---|---|---|---|
| 0 | 0 | 1 | 0% | ~0ms |
| 1 | 10 | 95 | 11.11111% | 1ms |
| 2 | 123 | 9,025 | 1.36987% | 3ms |
| 3 | 1,631 | 857,375 | 0.19048% | ~0ms |
| 4 | 27,823 | 81,450,625 | 0.0341647% | 1ms |
| 5 | 1,052,294 | 7,737,809,375 | 0.01359989% | 1ms |
| 6 | 79,363,901 | 735,091,890,625 | 0.0107968% | 6ms |
| 7 | 7,167,426,599 | 69,833,729,609,375 | 0.010263779% | 25ms |
| 8 | 664,619,637,035 | 6,634,204,312,890,625 | 0.010019036% | 145ms |
| 9 | 61,837,230,111,568 | 630,249,409,724,609,375 | 0.00981161695% | 607ms |
| 10 | 5,755,842,691,968,125 | 59,873,693,923,837,890,625 | 0.0096135359 | 2598ms |
| 11 | 535,784,439,899,095,505 | 5,688,000,922,764,599,609,375 | 0.0094197437 | 9838ms |
| 12 | 49,873,974,843,674,606,335 | 540,360,087,662,636,962,890,625 | 0.009230201218% | 38655ms |