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C# C# Collections Sets and Dictionaries Using Dictionaries

Calvin Secrest
Calvin Secrest
24,815 Points
Posted by Calvin Secrest
Calvin Secrest
24,815 Points

An item with the same key has already been added.

BUMMER! An item with the same key has already been added.

Code the AddWord method such that, WordCount will contain the number of times the AddWord method has been called with a given word.

For example, if AddWord is called twice with the word "rock" then WordCount["rock"] will be 2.

Please help...

LexicalAnalysis.cs 
using System.Collections.Generic;

namespace Treehouse.CodeChallenges
{
    public class LexicalAnalysis
    {
        public Dictionary<string, int> WordCount = new Dictionary<string, int>();

        public void AddWord(string word)
        {
            WordCount.Add(word, (WordCount.Count +1));
        }
    }
}

2 Answers

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

:point_right: Keys in a dictionary must all be unique.

Your code should check to see if a word has already been added, and only add a new one if it's not already there. If it is already there, you can just modify the value.

Joel Brennan
Joel Brennan
18,300 Points
Joel Brennan
Joel Brennan
18,300 Points

I found this answer very helpful for solving this question: http://stackoverflow.com/a/7132978