Created
April 22, 2012 04:10
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isPrime
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| def isPrime(n): | |
| n=abs(n) | |
| if n<=1: | |
| return False | |
| if n==2: | |
| return True | |
| if not n&1: | |
| return False | |
| i=3 | |
| while i*i<=n: | |
| if n%i==0: | |
| return False | |
| i+=2 | |
| return True |
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