adventofcode2023/day1/part2/Program.cs
2023-12-04 12:34:10 -05:00

62 lines
1.8 KiB
C#

using System.Globalization;
namespace part2;
class Program
{
static void Main(string[] args)
{
// The description does not say this (had to go to reddit to find this)
// but the strings can combine the same letter for 2 unique numbers
// i.e. sevenine is "79" not "7ine"
int sum = 0;
string letters = "abcdefghijklmnopqrstuvwxyz";
Dictionary<string, int> written_numbers = new() {
{"one", 1},
{"two", 2},
{"three", 3},
{"four", 4},
{"five", 5},
{"six", 6},
{"seven", 7},
{"eight", 8},
{"nine", 9}
};
StreamReader sr = new StreamReader("input");
String line = sr.ReadLine();
//Continue to read until you reach end of file
while (line != null)
{
line = line.ToLower();
List<int> numbers_in_line = [];
for(int i = 0; i < line.Length; i++) {
foreach(var number in written_numbers) {
if(line[i] == number.Key[0]) {
if(string.Compare(line, i, number.Key, 0, number.Key.Length) == 0) {
numbers_in_line.Add(number.Value);
}
}
if(char.IsNumber(line[i])) {
numbers_in_line.Add(Int32.Parse(line[i].ToString()));
}
}
}
sum += numbers_in_line.First() * 10;
sum += numbers_in_line.Last();
Console.WriteLine($"Line: {line} - Sum: {sum}");
line = sr.ReadLine();
}
//close the file
sr.Close();
Console.WriteLine($"Total Sum: {sum}");
}
}