Reddit Daily Programmer 294 Easy

Easy.cs

using System.Collections.Generic;
using System.IO;
using System.Linq;

namespace Reddit
{
    internal static class Easy
    {
        internal static readonly int[] Points = new int[]
        {
            1,  3,  3,  2,  1,  4,  2,  4,  1,  8,
            5,  1,  3,  1,  1,  3, 10,  1,  1,  1,
            1,  4,  4,  8,  4, 10
        };

        internal static int Score(string word)
        {
            int score = 0;
            for (int i = 0; i < word.Length; i++)
            {
                char value = word[i];
                if (word[i] != '?')
                {
                    int index = value - 'a';
                    score = score + Points[index];
                }
            }
            return score;
        }

        internal static List<string> Words = new List<string>();

        internal static void Load(string path)
        {
            Words.Clear();

            var items = File.ReadAllLines(path);
            foreach (string item in items.Where(e => e.Length <= 20))
            {
                Words.Add(item);
            }
        }

        internal static string Find(string rack, string word)
        {
            char[] input = rack.ToArray();
            char[] output = word.ToArray();
            for (int i = 0; i < output.Length; i++)
            {
                bool flag = true;
                for (int j = 0; j < input.Length; j++)
                {
                    if (input[j] == output[i])
                    {
                        input[j] = ' ';
                        flag = false;
                        break;
                    }
                }
                if (flag)
                {
                    for (int j = 0; j < input.Length; j++)
                    {
                        if (input[j] == '?')
                        {
                            output[i] = '?';
                            input[j] = ' ';
                            flag = false;
                            break;
                        }
                    }
                }
                if (flag)
                {
                    return null;
                }
            }
            return new string(output);
        }

        internal static bool Scrabble(string rack, string word)
        {
            string value = Find(rack, word);
            return value != null;
        }

        internal static string Longest(string rack)
        {
            int length = 0;
            string word = null;
            foreach (string item in Words)
            {
                string result = Find(rack, item);
                if (result != null)
                {
                    int value = result.Length;
                    if (value > length)
                    {
                        length = value;
                        word = item;
                    }
                }
            }
            return word;
        }

        internal static string Highest(string rack)
        {
            int score = 0;
            string word = null;
            foreach (string item in Words)
            {
                string result = Find(rack, item);
                if (result != null)
                {
                    int value = Score(result);
                    if (value > score)
                    {
                        score = value;
                        word = item;
                    }
                }
            }
            return word;
        }
    }
}