cheremin

public static final class Vector2D {
	private double x;
	private double y;

	public Vector2D( final double x,
	                 final double y ) {
		this.x = x;
		this.y = y;
	}

cheremin

import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.ThreadLocalRandom;

import org.junit.Ignore;
import org.junit.Test;

/** time is always in milliseconds */
public class MysteriousServerTest {
	private static final ThreadLocalRandom RND = ThreadLocalRandom.current();

cheremin

class Solution {
	private static final char OP_CONCATENATE = ' ';

	/**
	 * Operators, ordered by priority
	 */
	private static final char[] OPERATORS = { OP_CONCATENATE, '*', '+', '-' };

	private static final boolean DEBUG = false;

cheremin

import java.util.ArrayList;
import java.util.OptionalDouble;
import java.util.concurrent.ThreadLocalRandom;

class PaginationWastedSizeSimulation {

  public static void main(final String[] args) {
    //Records of random size, with avg=averageRecordSize
    //Page of pageSize
    //If record doesn't fit page -- it is moved to the next page, remaining space on the first page