C# Sharp Basic Algorithm Exercises: Exchange the first and last characters in a given string and return the new string
C# Sharp Basic Algorithm: Exercise-7 with Solution
Write a C# Sharp program to exchange the first and last characters in a given string and return the new string.
Pictorial Presentation:
Sample Solution:
C# Sharp Code:
using System;
namespace exercises
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine(test("abcd"));
Console.WriteLine(test("a"));
Console.WriteLine(test("xy"));
Console.ReadLine();
}
public static string test(string str)
{
return str.Length > 1
? str.Substring(str.Length - 1) + str.Substring(1, str.Length - 2) + str.Substring(0, 1) : str;
}
}
}
Sample Output:
dbca a yx
Flowchart:
C# Sharp Code Editor:
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Previous: Write a C# Sharp program to remove the character in a given position of a given string. The given position will be in the range 0..str.length()-1 inclusive).
Next: Write a C# Sharp program to create a new string which is 4 copies of the 2 front characters of a given string. If the given string length is less than 2 return the original string.
What is the difficulty level of this exercise?
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