UPDATE May 13, 2015: Wow, look at the Jekyll code support!

Here’s some code to answer Project Euler 1 in a few languages.

By the way, you do not need code to solve this problem…

(1) Java:

public class pe1 {  
  public static void main(String[] args) {  
    int total = 0;  
    for (int i = 3; i < 1000; i++) {  
      if (i % 3 == 0 || i % 5 == 0) {  
        total += i;  
      }  
    }  
    System.out.println(total);  
  }  
}

(2) Python:

total = 0  
for i in range(1000):  
  if i % 3 == 0 or i % 5 == 0:  
  total += i  
print(total)

(Alternatively, the one-liner below is probably “better”.)

print(sum(x for x in range(1000) if x % 3 == 0 or x % 5 == 0))

(3) C++:

#include <iostream>

int main() {  
  int total = 0;  
  for (int i = 3; i < 1000; i++) {  
    if (i % 3 == 0 || i % 5 == 0) {  
      total += i;  
    }  
  }  
  std::cout << total << std::endl;  
  return 0;  
}

(4) Scala:

object HelloWorld {  
  def main(args: Array[String]): Unit = {  
    var result : Int = 0  
    for (a <- 1 until 1000) {  
      if (a % 3 == 0 || a % 5 == 0) {  
        result += a;  
      }  
    }  
    println(a)  
  }  
}

Note to self for Scala: to means it includes the last value, until means it does not.