Example of a factorial time algorithm O( n! )
Generate all the permutations of a list You have n! lists, so you cannot achieve better efficiency than O(n!).
factorial
Example of O(n!)?
There you go. This is probably the most trivial example of a function that runs in O(n!) time (where n is the argument to the function): void nFacRuntimeFunc(int n) { for(int i=0; i<n; i++) { nFacRuntimeFunc(n-1); } }
Ruby factorial function
There is no factorial function in the standard library.
Which function grows faster, exponential or factorial? [closed]
n! eventually grows faster than an exponential with a constant base (2^n and e^n), but n^n grows faster than n! since the base grows as n increases.
What is the fastest factorial function in JavaScript? [closed]
You can search for (1…100)! on Wolfram|Alpha to pre-calculate the factorial sequence. The first 100 numbers are: 1, 2, 6, 24, 120, 720, 5040, 40320, 362880, 3628800, 39916800, 479001600, 6227020800, 87178291200, 1307674368000, 20922789888000, 355687428096000, 6402373705728000, 121645100408832000, 2432902008176640000, 51090942171709440000, 1124000727777607680000, 25852016738884976640000, 620448401733239439360000, 15511210043330985984000000, 403291461126605635584000000, 10888869450418352160768000000, 304888344611713860501504000000, 8841761993739701954543616000000, 265252859812191058636308480000000, 8222838654177922817725562880000000, 263130836933693530167218012160000000, 8683317618811886495518194401280000000, 295232799039604140847618609643520000000, 10333147966386144929666651337523200000000, 371993326789901217467999448150835200000000, 13763753091226345046315979581580902400000000, 523022617466601111760007224100074291200000000, … Read more