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Added an algorithm that returns a certain number of prime numbers
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@@ -35,6 +35,44 @@ def getPrimes(goalNumber: int):
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primes.sort()
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return primes
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#This function gets a certain number of primes
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def getNumPrimes(numberOfPrimes: int):
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primes = []
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foundFactor = False
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#If the number is 0 or negative return an empty list
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if(numberOfPrimes < 1):
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return primes
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#Otherwise there is at lease 1, meaning 2 will be the first entry
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else:
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primes.append(2)
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#Loop through every odd number starting at 3 until you reach the correct number of entries looking for a prime number
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possiblePrime = 3 #Holds the next possible prime number
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while((len(primes) < numberOfPrimes) and (possiblePrime > 0)):
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#Loop through all primes we have already found, checking for a factor
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for primeNum in primes:
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#If you find a factor the number is not a prime so raise the flag and break the loop
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if((possiblePrime % primeNum) == 0):
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foundFactor = True
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break
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#If you don't find a factor then this number is prime so add it to the list
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if(not foundFactor):
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primes.append(possiblePrime)
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#If it wasn't prime simply reset the flag
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else:
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foundFactor = False
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#Increment to the next possible prime number
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possiblePrime += 2
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#Everything should already be in order, but sort it just in case
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primes.sort()
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#Return the list with all the prime numbers
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return primes
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#This is a function that returns all the factors of goalNumber
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def getFactors(goalNumber: int):
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#You need to get all the primes up to this number
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