Problem of the Day
A new programming or logic puzzle every Mon-Fri

One Letter Off

For this problem you'll need to import a dictionary. The program will take in a word such as "cat" and spit back out all the words that are within one letter of "cat". You should have words such as "cot", "cut", "can", and "rat". If there are no words within one letter than print out "no words found". Note the goal isn't to add or remove letters, only replace.

Permalink: http://problemotd.com/problem/one-letter-off/

Comments:

  • Anonymous - 9 years, 3 months ago

    c#

    class Program
{
    static void Main(string[] args)
    {
        Console.WriteLine("Enter Word:");
        List<string> similarWords = GetSimilarWords(Console.ReadLine());
        if (similarWords.Count == 0)
            Console.WriteLine("no words found");
        else
            similarWords.ForEach(x => Console.WriteLine(x));

        Console.Read();
    }

    static List<string> GetSimilarWords(string word)
    {
        List<string> output = new List<string>();
        List<string> dictionary = LoadDictionary();

        for( int i = 0; i < word.Length; i++)
        {
            StringBuilder patternBuilder = new StringBuilder();
            for (int j = 0; j < word.Length; j++)
            {
                if (j==i)
                    patternBuilder.Append("[A-Za-z]");
                else
                    patternBuilder.Append(word[j]);
            }

            Regex reg = new Regex(patternBuilder.ToString());

            output.AddRange(dictionary.Where(x => x != word && reg.IsMatch(x)));
        }
        return output;
    }
}

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  • Eddy - 9 years, 3 months ago

    My solution in C.

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  • Anonymous - 9 years ago

    def letters_in_common(word1, word2):
    x = 0
    lic = 0
    while x < len(word1):
        if word1[x] == word2[x]:
            lic = lic + 1
            x = x + 1
        else:
            x = x + 1

    return lic



file = open('WordsEn.txt', 'r')

y = raw_input("Enter a word to find words that are one letter off> ")

one_off = []

for line in file:
    if len(y) == len(line)-1:
        if letters_in_common(y, line) == len(y) - 1:
            one_off.append(line[0:len(y)])

if len(one_off) > 0:
    print one_off
else:
    print "No Words Found"

    Output: Enter a word to find words that are one letter off> hairy ['dairy', 'fairy', 'hairs', 'harry']

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