public void part1test2()
{
var moons = new[] { Moon.Parse("<x=-8, y=-10, z=0>"),
Moon.Parse("<x=5, y=5, z=10>"),
Moon.Parse("<x=2, y=-7, z=3>"),
Moon.Parse("<x=9, y=-8, z=-3>") };
//After 0 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=-8, y=-10, z=0>, vel=<x=0, y=0, z=0>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=5, y=5, z=10>, vel=<x=0, y=0, z=0>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=2, y=-7, z=3>, vel=<x=0, y=0, z=0>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=9, y=-8, z=-3>, vel=<x=0, y=0, z=0>"));
Repeat(10, () => Step(moons));
//After 10 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=-9, y=-10, z=1>, vel=<x=-2, y=-2, z=-1>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=4, y=10, z=9>, vel=<x=-3, y=7, z=-2>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=8, y=-10, z=-3>, vel=<x=5, y=-1, z=-2>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=5, y=-10, z=3>, vel=<x=0, y=-4, z=5>"));
Repeat(10, () => Step(moons));
//After 20 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=-10, y=3, z=-4>, vel=<x=-5, y=2, z=0>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=5, y=-25, z=6>, vel=<x=1, y=1, z=-4>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=13, y=1, z=1>, vel=<x=5, y=-2, z=2>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=0, y=1, z=7>, vel=<x=-1, y=-1, z=2>"));
Repeat(10, () => Step(moons));
//After 30 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=15, y=-6, z=-9>, vel=<x=-5, y=4, z=0>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=-4, y=-11, z=3>, vel=<x=-3, y=-10, z=0>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=0, y=-1, z=11>, vel=<x=7, y=4, z=3>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=-3, y=-2, z=5>, vel=<x=1, y=2, z=-3>"));
Repeat(10, () => Step(moons));
//After 40 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=14, y=-12, z=-4>, vel=<x=11, y=3, z=0>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=-1, y=18, z=8>, vel=<x=-5, y=2, z=3>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=-5, y=-14, z=8>, vel=<x=1, y=-2, z=0>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=0, y=-12, z=-2>, vel=<x=-7, y=-3, z=-3>"));
Repeat(10, () => Step(moons));
//After 50 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=-23, y=4, z=1>, vel=<x=-7, y=-1, z=2>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=20, y=-31, z=13>, vel=<x=5, y=3, z=4>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=-4, y=6, z=1>, vel=<x=-1, y=1, z=-3>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=15, y=1, z=-5>, vel=<x=3, y=-3, z=-3>"));
Repeat(10, () => Step(moons));
//After 60 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=36, y=-10, z=6>, vel=<x=5, y=0, z=3>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=-18, y=10, z=9>, vel=<x=-3, y=-7, z=5>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=8, y=-12, z=-3>, vel=<x=-2, y=1, z=-7>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=-18, y=-8, z=-2>, vel=<x=0, y=6, z=-1>"));
Repeat(10, () => Step(moons));
//After 70 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=-33, y=-6, z=5>, vel=<x=-5, y=-4, z=7>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=13, y=-9, z=2>, vel=<x=-2, y=11, z=3>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=11, y=-8, z=2>, vel=<x=8, y=-6, z=-7>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=17, y=3, z=1>, vel=<x=-1, y=-1, z=-3>"));
Repeat(10, () => Step(moons));
//After 80 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=30, y=-8, z=3>, vel=<x=3, y=3, z=0>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=-2, y=-4, z=0>, vel=<x=4, y=-13, z=2>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=-18, y=-7, z=15>, vel=<x=-8, y=2, z=-2>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=-2, y=-1, z=-8>, vel=<x=1, y=8, z=0>"));
Repeat(10, () => Step(moons));
//After 90 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=-25, y=-1, z=4>, vel=<x=1, y=-3, z=4>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=2, y=-9, z=0>, vel=<x=-3, y=13, z=-1>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=32, y=-8, z=14>, vel=<x=5, y=-4, z=6>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=-1, y=-2, z=-8>, vel=<x=-3, y=-6, z=-9>"));
Repeat(10, () => Step(moons));
//After 100 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=8, y=-12, z=-9>, vel=<x=-7, y=3, z=0>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=13, y=16, z=-3>, vel=<x=3, y=-11, z=-5>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=-29, y=-11, z=-1>, vel=<x=-3, y=7, z=4>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=16, y=-13, z=23>, vel=<x=7, y=1, z=1>"));
Assert.That(GetTotalEnergy(moons), Is.EqualTo(1940));
}
public void part1test1()
{
var moons = new[] { Moon.Parse("<x=-1, y=0, z=2>"),
Moon.Parse("<x=2, y=-10, z=-7>"),
Moon.Parse("<x=4, y=-8, z=8>"),
Moon.Parse("<x=3, y=5, z=-1>") };
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=-1, y=0, z=2>, vel=<x=0, y=0, z=0>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=2, y=-10, z=-7>, vel=<x=0, y=0, z=0>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=4, y=-8, z=8>, vel=<x=0, y=0, z=0>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=3, y=5, z=-1>, vel=<x=0, y=0, z=0>"));
Step(moons);
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=2, y=-1, z=1>, vel=<x=3, y=-1, z=-1>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=3, y=-7, z=-4>, vel=<x=1, y=3, z=3>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=1, y=-7, z=5>, vel=<x=-3, y=1, z=-3>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=2, y=2, z=0>, vel=<x=-1, y=-3, z=1>"));
Step(moons);
//After 2 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=5, y=-3, z=-1>, vel=<x=3, y=-2, z=-2>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=1, y=-2, z=2>, vel=<x=-2, y=5, z=6>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=1, y=-4, z=-1>, vel=<x=0, y=3, z=-6>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=1, y=-4, z=2>, vel=<x=-1, y=-6, z=2>"));
Step(moons);
//After 3 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=5, y=-6, z=-1>, vel=<x=0, y=-3, z=0>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=0, y=0, z=6>, vel=<x=-1, y=2, z=4>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=2, y=1, z=-5>, vel=<x=1, y=5, z=-4>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=1, y=-8, z=2>, vel=<x=0, y=-4, z=0>"));
Step(moons);
//After 4 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=2, y=-8, z=0>, vel=<x=-3, y=-2, z=1>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=2, y=1, z=7>, vel=<x=2, y=1, z=1>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=2, y=3, z=-6>, vel=<x=0, y=2, z=-1>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=2, y=-9, z=1>, vel=<x=1, y=-1, z=-1>"));
Step(moons);
//After 5 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=-1, y=-9, z=2>, vel=<x=-3, y=-1, z=2>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=4, y=1, z=5>, vel=<x=2, y=0, z=-2>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=2, y=2, z=-4>, vel=<x=0, y=-1, z=2>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=3, y=-7, z=-1>, vel=<x=1, y=2, z=-2>"));
Step(moons);
//After 6 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=-1, y=-7, z=3>, vel=<x=0, y=2, z=1>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=3, y=0, z=0>, vel=<x=-1, y=-1, z=-5>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=3, y=-2, z=1>, vel=<x=1, y=-4, z=5>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=3, y=-4, z=-2>, vel=<x=0, y=3, z=-1>"));
Step(moons);
//After 7 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=2, y=-2, z=1>, vel=<x=3, y=5, z=-2>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=1, y=-4, z=-4>, vel=<x=-2, y=-4, z=-4>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=3, y=-7, z=5>, vel=<x=0, y=-5, z=4>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=2, y=0, z=0>, vel=<x=-1, y=4, z=2>"));
Step(moons);
//After 8 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=5, y=2, z=-2>, vel=<x=3, y=4, z=-3>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=2, y=-7, z=-5>, vel=<x=1, y=-3, z=-1>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=0, y=-9, z=6>, vel=<x=-3, y=-2, z=1>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=1, y=1, z=3>, vel=<x=-1, y=1, z=3>"));
Step(moons);
//After 9 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=5, y=3, z=-4>, vel=<x=0, y=1, z=-2>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=2, y=-9, z=-3>, vel=<x=0, y=-2, z=2>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=0, y=-8, z=4>, vel=<x=0, y=1, z=-2>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=1, y=1, z=5>, vel=<x=0, y=0, z=2>"));
Step(moons);
//After 10 steps:
Assert.That(moons[0].ToString(), Is.EqualTo("pos=<x=2, y=1, z=-3>, vel=<x=-3, y=-2, z=1>"));
Assert.That(moons[1].ToString(), Is.EqualTo("pos=<x=1, y=-8, z=0>, vel=<x=-1, y=1, z=3>"));
Assert.That(moons[2].ToString(), Is.EqualTo("pos=<x=3, y=-6, z=1>, vel=<x=3, y=2, z=-3>"));
Assert.That(moons[3].ToString(), Is.EqualTo("pos=<x=2, y=0, z=4>, vel=<x=1, y=-1, z=-1>"));
Assert.That(GetTotalEnergy(moons), Is.EqualTo(179));
int counter = 10;
while (true)
{
if (GetTotalEnergy(moons) == 0 && moons[0].ToString() == "pos=<x=-1, y=0, z=2>, vel=<x=0, y=0, z=0>")
{
break;
}
Step(moons);
counter++;
}
Assert.That(counter, Is.EqualTo(2772));
Console.WriteLine(counter);
}