dvereb/Advent-of-Code
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Refactor, but did it get better?

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This commit is contained in:
David Vereb 2022-12-13 08:55:20 -05:00
parent 575b9e8aed
commit 4b86074a06
1 changed files with 65 additions and 69 deletions
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134
2022/8/main.cpp
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@ -4,6 +4,54 @@
#include <string> #include <string>
#include <vector> #include <vector>
std::vector<int> ParseRow(auto begin, auto end)
{
std::vector<int> rtn_indexes;
std::vector<int> values;
// initialize list with the first value
values.push_back(*begin);
// iterate through the rest:
for(auto i = begin + 1; i != end; ++i)
{
// if it's higher than the most recent one:
const auto val = *i;
if(val > values.back())
{
values.push_back(val);
rtn_indexes.push_back(std::distance(begin, i));
}
}
return rtn_indexes;
}
std::vector<int> ParseCol(auto begin, auto end, int col)
{
std::vector<int> rtn_indexes;
std::vector<int> values;
// initialize list with the first value
values.push_back((*begin)[col]);
// iterate through the rest:
for(auto i = begin + 1; i != end; ++i)
{
// if it's higher than the most recent one:
const auto val = (*i)[col];
if(val > values.back())
{
values.push_back(val);
rtn_indexes.push_back(std::distance(begin, i));
}
}
return rtn_indexes;
}
int main() int main()
{ {
std::ifstream ifs("data.txt"); std::ifstream ifs("data.txt");
@ -45,79 +93,27 @@ int main()
std::vector<int> points; std::vector<int> points;
for(auto y = 1; y < trees.size() - 1; ++y) for(auto y = 1; y < trees.size() - 1; ++y)
{ {
points.clear(); // left to right:
points = ParseRow(trees[y].begin(), trees[y].end());
for(const auto &point : points)
visible_coordinates.insert({point,y});
// initialize list with the first value // right to left:
points.push_back(trees[y][0]); points = ParseRow(trees[y].rbegin(), trees[y].rend());
for(const auto &point : points)
// iterate through the rest: visible_coordinates.insert({trees[y].size() - point - 1,y});
for(auto x = 1; x < trees[y].size(); ++x)
{
// if it's higher than the most recent one:
const auto val = trees[y][x];
if(val > points.back())
{
points.push_back(val);
visible_coordinates.insert({x,y});
}
}
} }
for(auto y = 1; y < trees.size() - 1; ++y) for(auto x = 1; x < trees.size() - 1; ++x)
{ {
points.clear(); // top to bottom:
points = ParseCol(trees.begin(), trees.end(), x);
for(const auto &point : points)
visible_coordinates.insert({x,point});
// initialize list with the first value // bottom to top:
points.push_back(trees[y][trees.size()-1]); points = ParseCol(trees.rbegin(), trees.rend(), x);
for(const auto &point : points)
// iterate through the rest: visible_coordinates.insert({x, trees.size() - point - 1});
for(auto x = trees[y].size() - 2; x > 0; --x)
{
// if it's higher than the most recent one:
const auto val = trees[y][x];
if(val > points.back())
{
points.push_back(val);
visible_coordinates.insert({x,y});
}
}
}
for(auto x = 1; x < trees[0].size() - 1; ++x)
{
points.clear();
// initialize list with the first value
points.push_back(trees[0][x]);
// iterate through the rest:
for(auto y = 1; y < trees.size(); ++y)
{
// if it's higher than the most recent one:
const auto val = trees[y][x];
if(val > points.back())
{
points.push_back(val);
visible_coordinates.insert({x,y});
}
}
}
for(auto x = 1; x < trees[0].size() - 1; ++x)
{
points.clear();
// initialize list with the first value
points.push_back(trees[trees.size()-1][x]);
// iterate through the rest:
for(auto y = trees.size()-2; y > 0; --y)
{
// if it's higher than the most recent one:
const auto val = trees[y][x];
if(val > points.back())
{
points.push_back(val);
visible_coordinates.insert({x,y});
}
}
} }
total += visible_coordinates.size(); total += visible_coordinates.size();