Remove certain numbers from a string

schotsl

So I need to remove a certain number (the number 0) from a string with, I thought I should split the string up and then look at each number separated at which point I would replace ever 0 with a one but I've got no clue on how to actual put this in code.

GoToLoop

Take a look at String's many methods so you can figure out the best approach to tackle your problem:

1. https://Processing.org/reference/String.html
2. http://docs.Oracle.com/javase/8/docs/api/java/lang/String.html

koogs

https://www.javatpoint.com/java-string-replaceall

jeremydouglass

@schotsl -- It wasn't clear to me whether you want to do this:

012340 -> 1234

or instead this:

012340 -> 112341

there are many ways to do these things. Here is one way using built in Processing functions:

Split your string by 0s, then join the segments together with nothing:

String in, out;
String[] segs;
in = "012340";
segs = split(in, '0');
out = join(segs, "");
println(out); // 1234

or, more concisely:

String in, out;
in = "012340";
out = join(split(in, '0'), "");
println(out); // 1234

This works for replacing "0" with nothing, or with something, like "1":

String in, out;
in = "012340";
out = join(split(in, '0'), "1");
println(out); // 112341

For the reference, see:

• https://processing.org/reference/split_.html
• https://processing.org/reference/join_.html

schotsl

Thnx to you all! I got it working now