Counting repeating numbers in an Array

Question

Fairly new to C#. Have an assignment for class that asks us to generate an array from user inputted values. This part is done and work\'s perfectly.

Now that the arr

Answer 1

You can create a dictionary in that the keys are numbers, and the values are counts of that specific number in the array, and then increase the values in the dictionary each time a number is found:

Example:

        int[] arrayOfNumbers = new int[] { 1, 4, 2, 7, 2, 6, 4, 4, };
        Dictionary countOfItems = new Dictionary();
        foreach (int eachNumber in arrayOfNumbers)
        {
            if (countOfItems.ContainsKey(eachNumber))
                countOfItems[eachNumber]++;
            else
                countOfItems[eachNumber] = 1;
        }

This code works in all C# versions, but if you are using C# 3 or greater you could use LINQ, as others are suggesting. =)