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numPrimes


create public int numPrimes(int a,int b) that finds number of primes (inclusive between those numbers).


numPrimes(1, 5) → 3
numPrimes(10, 20) → 4
numPrimes(20, 30) → 2

...Save, Compile, Run (ctrl-enter)

public int numPrimes(int a, int b) { }

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