C#•15mo ago

❔ Padding string from two sides

im trying to do padding of string from both side but it doesnt work. The Code:

 string Hello = " Hello, World ";
        int padding = (Console.WindowWidth - Hello.Length) / 2;
        string Hello_Mod = Hello.PadLeft(padding,'#');
        string Hello_Modd = Hello_Mod.PadRight(padding,'#');
        Console.WriteLine(Hello_Modd);
        Console.WriteLine(padding);
        Console.WriteLine(Console.WindowWidth);
        Console.WriteLine(Hello.Length);
        Console.WriteLine(Console.WindowWidth / 2);

 string Hello = " Hello, World ";
        int padding = (Console.WindowWidth - Hello.Length) / 2;
        string Hello_Mod = Hello.PadLeft(padding,'#');
        string Hello_Modd = Hello_Mod.PadRight(padding,'#');
        Console.WriteLine(Hello_Modd);
        Console.WriteLine(padding);
        Console.WriteLine(Console.WindowWidth);
        Console.WriteLine(Hello.Length);
        Console.WriteLine(Console.WindowWidth / 2);

The ouput im getting:

#################### Hello, World

#################### Hello, World

The output i wanted

#################### Hello, World ####################

#################### Hello, World ####################

38 Replies

Chiyoko_S•15mo ago

PadLeft and PadRight pads to the specified length that is it adds # until length of padding is reached if you do str.PadLeft(len, "#") then str2.PadRight(len, "#") does nothing because length of len is already reached in the first PadLeft call

Heisenberg•15mo ago

oh how can i fix that?

Chiyoko_S•15mo ago

so padding is the amount of new characters to add on each side, right?

Heisenberg•15mo ago

yea

Chiyoko_S•15mo ago

do Hello.Length + padding in the first call, then do str2.Length + padding? in the first one you add padding amount on the left side in the second one you add another padding amount on the right side Though I'd just avoid using PadLeft and PadRight altogether

Heisenberg•15mo ago

what does Hello.Length + padding and str2.Length + padding does?

Chiyoko_S•15mo ago

let's say you have str as the original string and you get the amount of new characters to add on each side by doing (width - length) / 2, let's call that padding (by the way, that wouldn't quite work with odd-number length strings) var leftPadded = str.PadLeft(str.Length + padding, "#") would be the original string + padding amount of #s added on the left side as I said above: the length you pass is the final length after padding same goes for right padding var padded = leftPadded.PadRight(leftPadded.Length + padding, "#") adds another padding amount of padding characters on the left padded string

Heisenberg•15mo ago

wait u can use leftPadded() as first parameters of PadRight()?

Chiyoko_S•15mo ago

why not oh

Heisenberg•15mo ago

isnt first parameter int? oh

Chiyoko_S•15mo ago

this is why you don't code without ide

Heisenberg•15mo ago

nvm

Chiyoko_S•15mo ago

I think you got the idea

Heisenberg•15mo ago

its just an console app XD ig

Chiyoko_S•15mo ago

though as I said above You do need to consider this

Heisenberg•15mo ago

i kinda think it may give same output as last time?

ffmpeg -i me -f null -•15mo ago

second padding would be of the whole length of the console

Heisenberg•15mo ago

ffmpeg -i me -f null -•15mo ago

what's the doubt apart that probably i wouldn't use padding for this just add characters

Heisenberg•15mo ago

Code i gave automatically find amount to chars to pad from both side to center main string but it only pads from one side

Chiyoko_S•15mo ago

Chiyoko_S•15mo ago

seems to work fine but as I said this gives a string that's 39 characters in total you'd need to add an extra character on either left or right if the string length is odd-numbered what's the code you currently have? the full code

Heisenberg•15mo ago

using System;

class Program{
    static void Main(){
        string Hello = " Hello, World ";
        int padding = (Console.WindowWidth - Hello.Length) / 2;
        string Hello_Mod = Hello.PadLeft(Hello.Length + padding,'#');
        string Hello_Modd = Hello_Mod.PadRight(Hello.Length + padding,'#');
        Console.WriteLine(Hello_Modd);
        Console.WriteLine(padding);
        Console.WriteLine(Console.WindowWidth);
        Console.WriteLine(Hello.Length);
        Console.WriteLine(Console.WindowWidth / 2);
    }
}

using System;

class Program{
    static void Main(){
        string Hello = " Hello, World ";
        int padding = (Console.WindowWidth - Hello.Length) / 2;
        string Hello_Mod = Hello.PadLeft(Hello.Length + padding,'#');
        string Hello_Modd = Hello_Mod.PadRight(Hello.Length + padding,'#');
        Console.WriteLine(Hello_Modd);
        Console.WriteLine(padding);
        Console.WriteLine(Console.WindowWidth);
        Console.WriteLine(Hello.Length);
        Console.WriteLine(Console.WindowWidth / 2);
    }
}

Chiyoko_S•15mo ago

you have Hello.Length in both the PadLeft and PadRight calls

ffmpeg -i me -f null -•15mo ago

you have already done the work yourself where by work i mean calculating the length of the padding you can just avoid calling pad and call instead new string('#', padding) that's it

Heisenberg•15mo ago

output

Chiyoko_S•15mo ago

the second call should have Hello_Mod.Length

Heisenberg•15mo ago

what does it do? oh

Chiyoko_S•15mo ago

it gives you a '#' character repeated padding times but that's more allocation!

Heisenberg•15mo ago

OHH

Heisenberg•15mo ago

Thank you so much <3 Ahh can i ask something?

Chiyoko_S•15mo ago

sure?

Heisenberg•15mo ago

string Hello_Modd = Hello_Mod.PadRight(Hello_Mod.Length + padding,'#');

string Hello_Modd = Hello_Mod.PadRight(Hello_Mod.Length + padding,'#');

about this line how actually this help?

Chiyoko_S•15mo ago

basically using my example with the result string being ##################aaa$$$$$$$$$$$$$$$$$$ the first PadLeft gives you ##################aaa which in this case would correspond to your Hello_Mod variable and we want to add another padding on the right side padding times, to that Hello_Mod variable

ffmpeg -i me -f null -•15mo ago

we could say that pad left goes from 0 to console center, and pad right goes from center to console width

Chiyoko_S•15mo ago

so that means we want the resulting string to be Hello_Mod.Length + padding characters long you did Hello.Length + padding originally which has no effect because Hello_Mod is already made to be at that length

Heisenberg•15mo ago

Accord•14mo ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ Padding string from two sides