Q.5: How to count the occurrence of each character in a string?

 Ans.: The user will input a string and we need to find the count of each character of the string and display it on console. We won’t be counting space character.

• input: hello world;

output: h – 1

e – 1

l – 3

o – 2

w – 1

r – 1

d – 1

internal static void Countcharacter(string str)

{

Dictionary<char, int> characterCount = new Dictionary<char, int>();

foreach (var character in str)

{

if (character != ' ')

{

if (!characterCount.ContainsKey(character))

{

characterCount.Add(character, 1);

}

else

{

characterCount[character]++;

}

}

}

foreach (var character in characterCount)

{

Console.WriteLine("{0} - {1}", character.Key, character.Value);

}

}