Reverse a string

vinutha a v

8y937Visual Basic .NET

Help me to Reverse a string without Replacing the position of the Special charactor in it

input : Pro#gramm&ing

output: gni#mmarg&orP

5 Replies

Know the answer? Post it — somebody with the same question will find it here.

Ramachandran M6y ago
            string str = "%Pro#gramm&ing";
            string strOriginal = string.Empty;
            char[] reversed = str.ToCharArray().Reverse().ToArray();

            foreach (char chr in reversed)
            {
                strOriginal = strOriginal + chr.ToString();
            }
            Console.WriteLine(str);
            Console.WriteLine(strOriginal);

Simplyfied Code :

string str = "%Pro#gramm&ing";
            char[] reversed = str.ToCharArray().Reverse().ToArray();
            Console.WriteLine(str);
            Console.WriteLine(reversed);
6y ago
Hello,
Try to this code it's just a logic in c# but also you can use same logic in your comfotable technology
string str = "", reverse = "";
int Length = 0;
Console.WriteLine("Enter a String");
str = Console.ReadLine();
Length = str.Length - 1;
while(Length>=0)
{
reverse = reverse + str[Length];
Length--;
}
Console.WriteLine("Reverse word is {0}",reverse);
Console.ReadLine();
Mageshwaran R6y ago
Hi,
Can you check with the below link:
https://www.c-sharpcorner.com/blogs/reverse-a-number-and-string-in-c-sharp1
Cynthia Sathuragiri8y ago
private static void Main(string[] args)
{
try
{
string str = "%Pro#gramm&ing";
var reverseStr = Reverse(str.ToCharArray());
Console.WriteLine(reverseStr);
Console.ReadLine();
}
catch (Exception ex)
{
// ignored
}
}
static string Reverse(char[] str)
{
// Initialize left and right pointers
int strlen = str.Length - 1;
int l = 0;
// Traverse string from both ends until
while (l < strlen)
{
// Ignore special characters
if (!IsAlphabet(str[l]))
l++;
else if (!IsAlphabet(str[strlen]))
strlen--;
else
{
SwapChars(ref str[l], ref str[strlen]);
l++;
strlen--;
}
}
return new string(str);
}
private static void SwapChars(ref char a, ref char b)
{
char c = a;
a = b;
b = c;
}
static bool IsAlphabet(char x)
{
return ((x >= 'A' && x <= 'Z') ||
(x >= 'a' && x <= 'z'));
}
}
Jenith Thakkar8y ago
Try this

var reversedWords = string.Join(" ",
str.Split(' ')
.Select(x => new String(x.Reverse().ToArray())));