RandomUtils>>isNotPrime throws IllegalArgumentException when argument is less
than 2.
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Key: MAHOUT-187
URL: https://issues.apache.org/jira/browse/MAHOUT-187
Project: Mahout
Issue Type: Bug
Affects Versions: 0.1
Reporter: Emerson Murphy-HIll
I was using a FastMap, which happened to be empty, and rehash() was called.
Rehash eventually calls isNotPrime where n=1, which throws an illegal argument
exception:
public static boolean isNotPrime(int n) {
if (n < 2) {
throw new IllegalArgumentException();
}
It seems to me anything less than two is not prime. Thus, I suggest:
public static boolean isNotPrime(int n) {
if (n < 2) {
return true;
}
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