Reverse only the word in the string not the whole string without using inbuilt functions

rani m mk

Hi all,

I have written the code below to reverse the words in the string or sentence.
Please run this in your system and check whether it is correct:

class Palindrome
    {
        public static void Main()
        {
            string text = "C Sharp Corner ";
            Console.WriteLine(PrintWordInReverse(text));


        }
        //Method to reverse the order
        static string PrintWordInReverse(string str)
        {
            string revWord = string.Empty;
            string finalsentence = string.Empty;
            for (int i = 0; i < str.Length; i++)
            { if(str[i]!=null)
                {
                    revWord=str[i]+revWord;
                }
                else
                {
                    revWord=revWord+"";
                    finalsentence=finalsentence+revWord;
                    revWord=string.Empty;
                }
            }
            if (revWord != string.Empty)
            {
            }
             return finalsentence;

        }
    }

6 Replies

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

Vulpes14y ago
Accepted answer
Satyapriya's solution works for option 1 in my previous post but, unfortunately, he's used three built-in functions.

Here's my own solution for that option which uses no built-in functions but is relatively long winded as a result:

using System;

class Palindrome
{
public static void Main()
{
string text = "C Sharp Corner";
Console.WriteLine(PrintWordInReverse(text));
}

//Method to reverse the order
static string PrintWordInReverse(string str)
{
string finalSentence = string.Empty;

int end = str.Length - 1;

for(int i = str.Length - 1; i >= 0; i--)
{
if (str[i] == ' ')
{
if (end - i == 0)
{
finalSentence += " ";
}
else
{
string word = string.Empty;
for (int j = i + 1; j <= end; j++)
{
word += str[j];
}
finalSentence += word + " ";
}
end = i - 1;
}
else if (i == 0)
{
if (end - i == 0)
{
finalSentence += str[i];
}
else
{
string word = string.Empty;
for (int j = 0; j <= end; j++)
{
word += str[j];
}
finalSentence += word;
}
}
}

return finalSentence;
}
}

Jignesh's solution works fine for option 2.

For option 3, this should work:

using System;

class Palindrome
{
public static void Main()
{
string text = "C Sharp Corner";
Console.WriteLine(PrintWordInReverse(text));
}

//Method to reverse the order
static string PrintWordInReverse(string str)
{
string finalSentence = string.Empty;

int start = 0;

for(int i = 0; i < str.Length; i++)
{
if (str[i] == ' ')
{
if (i - start == 0)
{
finalSentence += " ";
}
else
{
string revWord = string.Empty;
for (int j = i - 1; j >= start; j--)
{
revWord += str[j];
}
finalSentence += revWord + " ";
}
start = i + 1;
}
else if (i == str.Length - 1)
{
if (i - start == 0)
{
finalSentence += str[i];
}
else
{
string revWord = string.Empty;
for (int j = i; j >= start; j--)
{
revWord += str[j];
}
finalSentence += revWord;
}
}
}

return finalSentence;
}
}

0
rani m mk14y ago
Thanks Vulpes
0
Satyapriya Nayak14y ago
Hi Rani,

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Reverse_string
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            string s1 = "C Sharp Corner";
            string[] s2 = s1.Split(' ');
            Array.Reverse(s2);
            string s3 = String.Join(" ", s2);
            MessageBox.Show(s3);

        }
    }
}

Thanks
0
Vulpes14y ago
Rani,

Can you clarify which of these you want the answer to be:

Corner Sharp C

renroC prahS C

C prahS renroC

I suspect it might be the last one but I'm not sure.
0
Jignesh Trivedi14y ago
hi Rani,

Just Replace your PrintWordInReverse fuction with.

static string PrintWordInReverse(string str)
{
    string finalsentence = string.Empty;
    for (int i = str.Length - 1; i >= 0; i--)
    {
        finalsentence = finalsentence + str[i];
    }
    return finalsentence;
}

hope this will help you.
0
Santhosh Kumar Jayaraman14y ago
No. you have to add the below line after this line

revWord=str[i]+revWord;
finalsentence = revWord;
0