ollien
/
advent-of-code-2020
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Minor cleanup of day 24

master
Nick Krichevsky 2020-12-27 21:57:27 -05:00
parent 30bf0251bc
commit aa924e801d
1 changed files with 1 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
day24/day24.cpp
View File

@ -151,8 +151,6 @@ int part2(const std::vector<std::vector<Direction>> &input) {
}
}
next.clear();
for (auto &entry : flipped) {
auto neighbors = getNeighbors(entry.first);
int numFlippedNeighbors =
@ -164,12 +162,11 @@ int part2(const std::vector<std::vector<Direction>> &input) {
bool nextState = entry.second;
if (entry.second && (numFlippedNeighbors == 0 || numFlippedNeighbors > 2)) {
nextState = false;
next.emplace(entry.first, false);
} else if (!entry.second && numFlippedNeighbors == 2) {
nextState = true;
}
next.emplace(entry.first, nextState);
next[entry.first] = nextState;
}
std::swap(flipped, next);