CODEWITHSUNDEEP
c#
Maria
Maria

Reputation: 13

How can I convert from numbers to characters?

I have an array of numbers in C#. The numbers range from one to ten. I would like to just show letters for example a letter "b" instead of the number 2.

Is there an easy way for me to do this.

Hope there is.

Maria

Upvotes: 1

Views: 208

Answers (2)

Marc Gravell
Marc Gravell

Reputation: 1062745

The simplest way would be to just build a mapping array:

char[] chars = "abcdefghij".ToCharArray();

and just use:

for(int i = 0 ; i < arr.Length;i++) {
    int num = arr[i]; // 1 to 10
    Console.Write(chars[num-1]);
}

Upvotes: 1

Matti Virkkunen
Matti Virkkunen

Reputation: 65126

Put your letters of choice in a string and then index it with the number.

char character = "abcdefghij"[number - 1];

If you'd like to convert the entire array at once, you can easily do it using Linq:

using System.Linq;
// ...
string letters = "abcdefghij";
int[] numbers = new [] { 1, 5, 2, 7 };
string converted = new String(numbers.Select(n => letters[n - 1]).ToArray());

This takes advantage of the this constructor, which allows you to create a new string from an array of char.

Upvotes: 2

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