mirror of
https://github.com/TheAlgorithms/Python.git
synced 2025-07-26 01:43:17 +08:00
increment 1
This commit is contained in:
30
project_euler/Problem 07/sol1.py
Normal file
30
project_euler/Problem 07/sol1.py
Normal file
@ -0,0 +1,30 @@
|
||||
'''
|
||||
By listing the first six prime numbers:
|
||||
2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13.
|
||||
What is the Nth prime number?
|
||||
'''
|
||||
from __future__ import print_function
|
||||
from math import sqrt
|
||||
def isprime(n):
|
||||
if (n==2):
|
||||
return True
|
||||
elif (n%2==0):
|
||||
return False
|
||||
else:
|
||||
sq = int(sqrt(n))+1
|
||||
for i in range(3,sq,2):
|
||||
if(n%i==0):
|
||||
return False
|
||||
return True
|
||||
n = int(raw_input())
|
||||
i=0
|
||||
j=1
|
||||
while(i!=n and j<3):
|
||||
j+=1
|
||||
if (isprime(j)):
|
||||
i+=1
|
||||
while(i!=n):
|
||||
j+=2
|
||||
if(isprime(j)):
|
||||
i+=1
|
||||
print(j)
|
16
project_euler/Problem 07/sol2.py
Normal file
16
project_euler/Problem 07/sol2.py
Normal file
@ -0,0 +1,16 @@
|
||||
# By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13. What is the Nth prime number?
|
||||
def isprime(number):
|
||||
for i in range(2,int(number**0.5)+1):
|
||||
if number%i==0:
|
||||
return False
|
||||
return True
|
||||
n = int(raw_input('Enter The N\'th Prime Number You Want To Get: ')) # Ask For The N'th Prime Number Wanted
|
||||
primes = []
|
||||
num = 2
|
||||
while len(primes) < n:
|
||||
if isprime(num):
|
||||
primes.append(num)
|
||||
num += 1
|
||||
else:
|
||||
num += 1
|
||||
print(primes[len(primes) - 1])
|
Reference in New Issue
Block a user