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lennartb-/Program.cs

Created December 3, 2020 11:11
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Advent Of Code 2020 - Day 3
Raw
input.txt
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Raw
Program.cs
using System;
namespace adventofcode
{
class Program
{
static void Main()
{
var input = System.IO.File.ReadAllLines("input.txt");
var lineLength = input[0].Length;
const int right = 3;
const int down = 1;
int trees = 0;
int positionCounter = 0;
Console.WriteLine(input[0]);
for (int i = 1; i < input.Length; i += down)
{
var currentLine = input[i];
var currentLineChars = currentLine.ToCharArray();
var newPosition = positionCounter += right;
var currentChar = currentLineChars[newPosition];
var isTree = currentChar == '#';
if (isTree) trees++;
currentLineChars[newPosition] = isTree ? 'X' : 'O';
Console.WriteLine(currentLineChars);
if ((positionCounter + right) >= lineLength)
{
positionCounter -= lineLength;
}
}
Console.WriteLine(trees);
}
}
}
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