goshki

/**
 * Returns a given power of ten (10 ^ 0 = 1, 10 ^ 1 = 10, 10 ^ 2 = 100, etc.).
 */
function powerOfTen( power ) {
    var result = 1;
    for ( i = 0; i < power; i++ ) {
        result *= 10;
    }
    return result;
}

goshki

/**
 * <p>If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples
 * is 23.
 * 
 * <p>Find the sum of all the multiples of 3 or 5 below 1000.
 * 
 * @author Adrian K. <[email protected]>
 */
object ProjectEulerProblem001 {
    def main( args : Array[String] ) : Unit = {

goshki

// Prints to browser console (Chrome, Firefox), no explicit ifs. Starts from 1.
for(i=0;i++<100;console.log([['fizz'][i%3],['buzz'][i%5]].join('')||i)); // 72 characters

// Writes to array 'a', no explicit ifs. Starts from 1.
for(a,i=0;i<100;a[i++]=([['fizz'][i%3],['buzz'][i%5]].join('')||i)); // 68 characters

// Returns an array (Firefox only), no explicit ifs, no explicit loops. Starts from 0.
Array.apply([],Array(100)).map((e,i)=>[['fizz'][i%3],['buzz'][i%5]].join('')||i) // 80 characters

goshki

# Most recent version of all records and creation date of the oldest version
#
# "id","version_since","version_until","content"
# "1","2010-06-01","2010-06-05","Initial text."
# "1","2010-06-05","2010-06-10","Modified text."
# "1","2010-06-10","2037-12-31","Final text."
# "2","2010-05-01","2010-05-31","Second initial text."
# "2","2010-05-31","2010-06-10","Modified second text."
# "2","2010-06-10","2010-06-15","Modified again second text."
# "2","2010-06-15","2037-12-31","Second final text."

goshki

# Given such a DB structure (MySQL):
# 
# Table: module_cms_articles
#
#  id |    version_since    |    version_until    |    creation_date    | creator_id |         title         |      lead       |         content          | visible 
# ----+---------------------+---------------------+---------------------+------------+-----------------------+-----------------+--------------------------+---------
#   1 | 2010-05-12 19:57:05 | 2010-05-12 20:15:20 | 2010-05-12 19:57:05 |          1 | 1-st article          | Introduction... | First article.           |       0 
#   1 | 2010-05-12 20:15:20 | 2010-05-12 20:27:28 | 2010-05-12 19:57:05 |          1 | 1-st article          | Introduction... | First article. Extended. |       0 
#   1 | 2010-05-12 20:27:28 | 2037-12-31 23:59:59 | 2010-05-12 19:57:05 |          1 | 1-st article modified | Introduction... | First Article. Extended. |       0 

goshki

/**
 * Calculates a compound interest (procent składany) for a given period of time
 * with given annual interest rate, number of capitalizations and saving period.
 * 
 * @param amount
 *         initial investment
 * 
 * @param interestRate
 *         nominal annual interest rate (in decimal, so if interest rate is 5%,
 *         we give 0.05)