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C# C# Collections Sets and Dictionaries Using Dictionaries

Yiu Ming Lai
Yiu Ming Lai
5,861 Points
Posted by Yiu Ming Lai
Yiu Ming Lai
5,861 Points

Help please challenge task 2.

I am getting this, anyone know what i did wrong?

LexicalAnalysis.cs(23,23): error CS1520: Class, struct, or interface method must have a return type Compilation failed: 1 error(s), 0 warnings

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)
        {
            if ( !WordCount.ContainsKey(word))
            {
                WordCount.Add(word,1);
            }
            else
            {
                WordCount[word] +=1;
            }
        }

        public Dictionary<string, int> newList = new Dictionary<string, int>();

        public static WordsWithCountGreaterThan(int num)
        {
            foreach(var word in WordCount)
            {
                int itemValue = word.Value;
                if( itemValue >= num)
                {
                    newList.Add(word.Key,word.Value);
                }
            }
            return newList;
        }        

    }
}

2 Answers

Tony Thigpen
Tony Thigpen
36,903 Points
Tony Thigpen
Tony Thigpen
36,903 Points

I believe this is what you may be looking for: 

using System.Collections.Generic;

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

        public void AddWord(string word)
        {
            if (!WordCount.ContainsKey(word))
            {
                WordCount.Add(word, 1);
            }
            else
            {
                WordCount[word] += 1;
            }
        }

        public Dictionary<string, int> WordsWithCountGreaterThan(int num)
        {
            Dictionary<string, int> newList = new Dictionary<string, int> { }; 
            //newList should be defined locally here.

            foreach (var word in WordCount)
            {
                if (word.Value > num)
                //can combine word.Value with "> num" to shorten
                {
                    newList.Add(word.Key, word.Value);
                }
            }
            return newList;
        }
    }
}
Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

:point_right: You left off the return type in the definition of WordsWithCountGreaterThan.

You wrote:

        public static WordsWithCountGreaterThan(int num)

But it should be:

        public Dictionary<string, int> WordsWithCountGreaterThan(int num)

You have a couple of additional issues to address:

  • You need to define newList before it is used.
  • The challenge says to check for "greater than" but your code has ">=" (greater or equal).