My friends keep bugging me to play Halo today. Which, to be fair, I'm excited to play, especially with the game finally releasing in a few days. I'm REALLY excited for the launch party, it will be my first since entering the gaming industry! But I'm still getting this in between matches while I have a few moments.

for (int i = 0; i < NUM_DAYS; i++) {
    // 1) Age fish, keeping track of new fish
    int newFish = 0;
    for (int j = 0; j < feesh.size(); j++) {
        if (feesh[j] == 0) {
            feesh[j] = 6;
            newFish++;
        } else {
            feesh[j]--;
        }
    }

    // 2) Add new fish to the end
    while (newFish-- > 0) feesh.push_back(8);
}

Pretty easy. I managed to do it throughout the course of two matches.

Ahahaha, okay, this is great. The problem is exactly the same, but more days. Meaning it was a brute force bait of a problem. I tried running it for fifteen minutes and it didn't finish. I'm going to need to be more clever about this. Maybe just a few buckets for the different ages?

Yeah. That ended up silly. It ended up in the quintillions of fish. But with my new bucket solution it worked!

for (int i = 0; i < NUM_DAYS; i++) {
    // 1) Mark fish ready for birth
    unsigned long long newFish = feesh[0];
    feesh[7] += feesh[0];

    // 2) Age all existing fish
    for (int j = 1; j < 9; j++) {
        feesh[j-1] = feesh[j];
    }

    // 3) Add in newly birthed fish
    feesh[8] = newFish;
}