Test whether the first input x is an n-parasitic number: http://en.wikipedia.org/wiki/Parasitic_number. ( n is the second input.)
Examples:
parasitic(128205,4) ---> true
parasitic(179487,4) ---> true
parasitic(179487,3) ---> false
Solution Stats
Problem Comments
5 Comments
Solution Comments
Show comments
Loading...
Problem Recent Solvers318
Suggested Problems
-
Return a list sorted by number of occurrences
2895 Solvers
-
Calculate the Levenshtein distance between two strings
1512 Solvers
-
Back to basics 21 - Matrix replicating
1816 Solvers
-
Find out missing number from a vector of 9 elements
322 Solvers
-
Deleting an element in a matrix
495 Solvers
More from this Author23
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
might be best to add a test case to guard against test suite hacking
Far too few test cases. In fact, a serious issue with this problem is that there are too few parasitic numbers that will fit into even 64 bits for most values of n.
I've added some test cases, that will make it a bit more difficult to game this problem.
Cases 5 and 7 are identical, and I believe they are both wrong. 5 x 142857 = 714285. Isn't this a parasitic number? What am I missing?
Can the problem creator disqualify "solutions" that cheat? There should be a point penalty (-200) associated with cheating too.