Problem Reversing multiple lines from a text file in C#

Question

Hello everyone..

I am trying to decode the text below by reversing it.

,sdreh ni dam og yeht taht nees eb lliw ti ;sdreh ni kniht neM"
".eno yb eno dna ,ylwols sesnes rieht revocer ylno yeht elihw
yakcaM selrahC

I used this code to do it.
           String reed = File.ReadAllText("DecodeThis.txt");
           char[] array1 = reed.ToCharArray();
           Array.Reverse(array1);
           Console.WriteLine(array1);
           Console.ReadLine();

the output is:
"Charles Mackay
while they only recover their senses slowly, and on by one.?
?Men think in hards: it will be seen taht they go mad in herds"

I want the output to be
" Men think in hards: it will be seen taht they go mad in herds,
while they only recover their senses slowly, and on by one.
Charles Mackay"

How can i do that? please help

Vulpes · Answer

You can tweak your code as follows to obtain the correct result: String reed = File.ReadAllText("DecodeThis.txt"); char[] array1 = reed.ToCharArray(); Array.Reverse(array1); string[] lines = new String(array1).Replace("", "").Split('
'); Array.Reverse(lines); reed = String.Join("
", lines); Console.WriteLine(reed); Console.ReadLine();

Muralidharan Deenathayalan · Answer

please try this code. You have do the reverse line by line. So, you the streamreader for this. StreamReader reader = new StreamReader("DecodeThis.txt"); while(true) { char[] array1 = reader.ReadLine().ToCharArray(); Array.Reverse(array1); Console.WriteLine(array1); } reader.Close(); I am getting the output as "Men think in herds; it will be seen that they go mad in herds, while they only recover their senses slowly, and one by one." Charles Mackay Hope this helps you.

abood net · Answer

Thanks man for ur reply .. I know how to do it line by line using while loop but i was wondering if i can tweak my code to achieve the same results!?

abood net · Answer

Vulpes, You are my savior man!

abood net · Answer

when i ran your code i received this error: NullReferenceException was unhandled Object reference not set to an instance of an object.

Frogleg · Answer

Try this using (StreamReader sr = new StreamReader("DecodeThis.txt")) { String reed = sr.ReadLine(); String reed1 = sr.ReadLine(); String reed2 = sr.ReadLine(); char[] array1 = reed.ToCharArray(); char[] array2 = reed1.ToCharArray(); char[] array3 = reed2.ToCharArray(); Array.Reverse(array1); Array.Reverse(array2); Array.Reverse(array3); Console.WriteLine(array1); Console.WriteLine(array2); Console.WriteLine(array3); }

Problem Reversing multiple lines from a text file in C#

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Answers (6)