Count the characters changed in a string [duplicate] - c#

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How to calculate distance similarity measure of given 2 strings?
(7 answers)
How to compare two rich text box contents and highlight the characters that are changed?
(3 answers)
Closed 5 years ago.
What I need to do seems simple enough but I can't seem to find a good way to do it. My app reads text off of a document but sometimes gets it wrong. Users are allowed to change the text in a verification step. What I need to know is how many characters changed, including case.
For example,
Original value: i23 MAin St
Value changed to: 123 Main Street
The number of characters changed in this instance would be 6. I then need to capture this value in a variable for later use. Is there a good way to do this in c#?

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I'm making in Unity a Dialog Box with Public Variables. I put the Texts and the Dialog Box Typed in sequence.
I wanna just put the Text and make the code break lines automically, and the problem is that I can't just set a Limit of Characters, cause exist a big difference if I try to use a lot of Uppercase Letters or just a little
I need a help to Break Line for Occupied Space, and not a Limit of Characters
Sorry if I wrote a confused question, I'm trying to learn more english ^^

How to get every possible combination of 8 characters? [duplicate]

This question already has answers here:
How to get all the unique n-long combinations of a set of duplicatable elements?
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Closed 3 years ago.
I am trying to save every combination of AAAAAAAA - ZZZZZZZZ to a text file. So far after having many many errors, I have got almost nowhere. I could post my code if needed, but it doesn't work or get near the wanted outcome.
So I was wondering how to do this in c#. My method at the moment is beyond repair, I will have to start all again in order to fix this.
As the output I would like something along the lines of
AAAAAAAA, AAAAAAAB, AAAAAAAC ... ZZZZZZZX, ZZZZZZZY, ZZZZZZZZ
Thanks in advance for any help.
This is a basic combinatorics question:
You want to write a string of 8 characters.
Each character can be a letter between A-Z (26 options), therefore, there are 26^8 combinations: 26*26*26*...26.
That is 208827064576 combinations.
Each combination is 10 bytes (8 for string, then \r\n), which is a total of 1944.85 GB.
Are you sure you want to write it to a file?
This will take about 1.5-2 Terabytes. That's a huge text file to start with, probably impractical.
Secondly, the way to do this simply is to have 8 nested loops, each running through A to Z, then concatenate the string inside the inner loop, appending to the data store each time.

How to write text to a specific line in Visual Studio C# [duplicate]

This question already has answers here:
How to insert characters to a file using C#
(10 answers)
Closed 7 years ago.
I'm wondering if there is a way to write data from the program to a specific line on an external text document.
For example, so far within my program I have a string array which gets the users input and saves it in the corresponding element and into the text file. It can read the first element fine, however how do I get it so when I enter the input for element 2 it overwrites what is on line 2 so when it reads the text file it displays the newest input into a label?
Well, the simplest approach would be:
string[] lines = File.ReadAllLines(path);
lines[index] = newText;
File.WriteAllLines(path, lines);
However, that assumes that there's already an appropriate number of lines in the file - is that always the case?
Note that this is also potentially inefficient in memory if the file is very large - but making it more efficient would also make the code more complicated.

how to compare two string and highlight changes? [duplicate]

This question already has answers here:
How to display word differences using c#?
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Closed 2 years ago.
I have two strings.
stringV1 = "123456";
stringV2 = "102300456";
First I need to compare them.
If stringV2 has some changes, this new text should be highlighted like this:
"1'0'23'00'456"
this has been discussed here already sometimes...
How to highlight the differences between subsequent lines in a file?
How to display word differences using c#?
...
Use Diff algorithm for string comparision.

How to display a customized code in C# & DevExexpress TextEditor with mask [duplicate]

This question already has answers here:
Is it possible to pad integers with zeros using regular expressions?
(2 answers)
Closed 9 years ago.
I am trying to display a code like ABC/DEF/00012 or ABC/EDF/01234 or ABC/DEF/00009
I use RegEx mask \w{3}/\w{3}/?????
The question mark is hard part that I could not figure it out.
Basically, I try to display the code with characters and numbers. I want to automatically add leading zeros on the number.
Byron
Seems that you're trying to match 5 digits at the end:
\w{3}/\w{3}/\d{5}

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