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advent-of-code-2020
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Minor style fixes to day 3

master
Nick Krichevsky 2020-12-03 00:52:36 -05:00
parent 5b41f34883
commit 9f01ad0ada
1 changed files with 2 additions and 1 deletions
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3
day3/day3.cpp
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@ -27,6 +27,7 @@ std::vector<std::string> read_input(const std::string &filename) {
int findNumTrees(const std::vector<std::string> &input, int xDelta, int yDelta = 1) {
int xCursor = 0;
int numTrees = 0;
// I want to use an iterator here, but I don't have a way to cleanly make sure I don't blow through the end :(
for (int i = 0; i < input.size(); i += yDelta) {
const std::string &row = input.at(i);
numTrees += (row.at(xCursor) == TREE_CHAR);
@ -58,7 +59,7 @@ long part2(const std::vector<std::string> &input) {
int main(int argc, char *argv[]) {
if (argc != 2) {
std::cerr << argv[0] << "<input_file>" << std::endl;
std::cerr << argv[0] << " <input_file>" << std::endl;
return 1;
}