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main ... day10

Author SHA1 Message Date
Xander Sigler 7be9cf3eb8 Created Day 10 template
continuous-integration/drone/push Build is failing Details
12 months ago

@ -0,0 +1,83 @@
using AdventOfCode.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
namespace AdventOfCode._2023
{
public class Day1 : AOCDay
{
private Dictionary<string, int> lookup = new Dictionary<string, int>()
{
{"zero", 0 },
{"one", 1 },
{"two", 2 },
{"three", 3 },
{"four", 4 },
{"five", 5 },
{"six", 6 },
{"seven", 7 },
{"eight", 8 },
{"nine", 9 },
};
protected override AOCResponse ExecutePartA()
{
var totalCount = 0;
foreach (var line in this.GetSplitInput())
{
totalCount += this._request.Version == AOCVersion.A ? ParseLineIntoNumber(line) : ParseTextLineIntoNumber(line);
}
this.Answer = totalCount;
return this._response;
}
protected override AOCResponse ExecutePartB()
{
return ExecutePartA();
}
private int ParseLineIntoNumber(string line)
{
var firstDigit = line.First(x => char.IsDigit(x));
var lastDigit = line.Reverse().First(x => char.IsDigit(x));
Log($"{line} => first: {firstDigit} last: {lastDigit}");
return int.Parse($"{firstDigit}{lastDigit}");
}
private int ParseTextLineIntoNumber(string line)
{
var foundDigits = new List<int>();
for (int c = 0; c < line.Length; c++)
{
if (char.IsDigit(line[c]))
{
foundDigits.Add(int.Parse(line[c].ToString()));
continue;
}
foreach (var key in lookup.Keys)
{
var length = c + key.Length;
if (length <= line.Length) //Check if we exceeded our line length
{
var section = new String(line.Skip(c).Take(key.Length).ToArray());
if (section.Equals(key))
{
foundDigits.Add(lookup[key]);
//We can't skip the length because eighthree => 83 and sevenine => 79. We only advance one char to fix
//c += key.Length-1; //Outer forloop auto increments one already
break;
}
}
}
}
var firstDigit = foundDigits.First();
var lastDigit = foundDigits.Last();
if (firstDigit > 9 || lastDigit > 9) throw new Exception("No digit should be higher than 9");
var total = int.Parse($"{firstDigit}{lastDigit}");
Log($"{line} => first: {firstDigit} last: {lastDigit} for total of {total}" );
return total;
}
}
}
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