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| package euler; | |
| /** | |
| * @author i88.ca | |
| * | |
| */ | |
| public class P5 { | |
| // refers to overview in project Euler. | |
| public static void main(String[] args) { | |
| int[] primes = { 2, 3, 5, 7, 11, 13, 17, 19 }; |
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| sum1,sum2=0,0 | |
| for i in range(100): | |
| sum1+=(i+1)*(i+1) | |
| sum2+=i+1 | |
| print sum2*sum2-sum1 |
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| sum1=0 | |
| for i in range(100): | |
| sum1+=(i+1)*(i+1) | |
| print 10000*101*101/4-sum1 |
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| import math | |
| def isPrime(n): | |
| i=2 | |
| while i<=math.sqrt(n): | |
| if n%i==0: | |
| return 0 | |
| i=i+1 | |
| return 1 | |
| i=3 | |
| c=2 |
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| import math | |
| def isPrime(n): | |
| i=2 | |
| while i<=math.sqrt(n): | |
| if n%i==0: | |
| return 0 | |
| i=i+1 | |
| return 1 | |
| i=3 |
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| ''' | |
| Created on May 23, 2014 | |
| @author: it.i88.ca | |
| ''' | |
| from functools import reduce | |
| def pro(s): | |
| return reduce(lambda x,y:x*y, list(int(s[i]) for i in range(len(s)) )) |
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| for a in range(1,333): | |
| blimit=int((1000-a)/2) | |
| for b in range(a,blimit): | |
| c=1000-a-b | |
| if a*b+1000*c==500000: | |
| print(a*b*c) | |
| break |
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| import math | |
| def isPrime(n): | |
| sqrt=int(math.sqrt(n)) | |
| for i in range(2,sqrt+1): | |
| if n%i==0: | |
| return 0 | |
| return 1 | |
| s=2+3 | |
| n=int((2000000-1)/6) | |
| for i in range(1,n+1): |
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| package euler; | |
| /** | |
| * | |
| * @author i88.ca | |
| */ | |
| public class ProjectEuler1 { | |
| public static void main(String[] args) { | |
| int[][] SQUARE = { |
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| package ca.i88.it.euler; | |
| public class ProjectEuler14 { | |
| public static void main(String[] args) { | |
| long start = System.currentTimeMillis(); | |
| final int number = 1000000; | |
| int sequenceLength = 0; | |
| int startingNumber = 0; |