How would one go about dividing a string (lets say its 1000 characters long) into x amount of rows and y amount of columns? The string contains randomly generated characters
#Dividing a string into x rows and y columns
haughty tulip
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half hollow
do you want to split them into separate strings as a String[] or a single string with newlines
dapper mist
you split the string in x parts
you split each part in y parts
haughty tulip
do you want to split them into separate strings as a `String[]` or a single stri...
i was thinking a single string, is that a bad idea?
would an array make sense here or do i not need it?
half hollow
you would need to add newlines every y characters and then truncate off the rest i guess
half hollow
would an array make sense here or do i not need it?
both make sense for different situations
dapper mist
Do you want all cells to have the same length?
and what do you want to do with the result?
half hollow
it's meant to be a grid of characters rather than a grid of strings
haughty tulip
Do you want all cells to have the same length?
im sorry what do u mean by cell?
dapper mist
im sorry what do u mean by cell?
an element in the table
half hollow
it's meant to be a grid of characters rather than a grid of strings
@dapper mist
haughty tulip
theres no table, am i missing smth?
dapper mist
I used "table" as "anything with rows and columns"
half hollow
you didn't give adequate detail
haughty tulip
you didn't give adequate detail
u asked, and i said its just one long string
haughty tulip
you split the string in x parts
you split each part in y parts
i guess this is the way to go
half hollow
u asked, and i said its just one long string
????
how is that related
you didn't give adequate detail overall
that's why dan's going in a different direction
also are you just going to truncate chars beyond x*y
dapper mist
What do you want to do with the result? How many columns and rows?
Is it one character per element or multiple characters?
haughty tulip
the amount of rows and columns will be given to the method
half hollow
also are you just going to truncate chars beyond x*y
.
haughty tulip
yes
dapper mist
Oh also: What have you tried so far?
dapper mist
and you still haven't said what you want to do with the result
haughty tulip
for (int i = 0; i < amountOfLines; i++) {
for (int j = 0; j < charsPerLine; j++) {
c = (char) (rnd.nextInt(26) + 'a');
generatedString = generatedString + c;
writer.write(c);
}
writer.write("\n");
}
had this
haughty tulip
and you still haven't said what you want to do with the result
i want to generate n random characters, lets say 1000, and then i want to search for a keyword
dapper mist
so you just want to split the string into multiple lines of equal size?
haughty tulip
and see if that keyword is in that string
haughty tulip
so you just want to split the string into multiple lines of equal size?
yea pretty much
i had this running, but then i wanted to add the option to find that keyword in that string, and make it uppercase
so if lets say the keyword "abc" is in the string, it replaces it and writes "ABC" instead
dapper mist
And you want to generate the data randomly on the fly?
haughty tulip
but this was hard to add with my code because i was instantly writing that string into a file, so i scratched that and created the string first and THEN made it write to a file, so i can (if i choose to) can edit the string before printing it, if that makes sense
haughty tulip
And you want to generate the data randomly on the fly?
yep
"c = (char) (rnd.nextInt(26) + 'a');" basically this
dapper mist
for(int i=0;i<rows;i++){
for(int j=0;j<columns;j++){
writer.write((char) (rnd.nextInt(26) + 'a'));
}
writer.write('\n');
}
you mean something like that?
haughty tulip
yea thats pretty much what i did, right?
haughty tulip
but if i were to do it like this
the issue with this is
if i wanted to replace the keyword in that file, i would have to go through the whole string again
so its smarter to look for the keyword first inside the array, edit it, and then print it, right?
dapper mist
ah ok
haughty tulip
do u see my problem? hope i worded that somewhat properly
dapper mist
StringBuilder lineBuilder=new StringBuilder(columns);
for(int i=0;i<rows;i++){
for(int j=0;j<columns;j++){
lineBuilder.append((char) (rnd.nextInt(26) + 'a'));
}
writer.write(lineBuilder.toString().replace(yourKeyword, targetText));
lineBuilder.setLength(0)
writer.write('\n');
}
like this?
dapper mist
well, you would create new strings over and over
haughty tulip
so is this similar to an array of strings?
anyways i think this works, imma play around with it a bit
dapper mist
A StringBuilder is similar to a single String but you can modify it
haughty tulip
thanks! 🙂