Question: In this program I'm parsing input into integers and I can't seem to be able to take in negative numbers and have tried a bunch of regular expressions. I can get positive integers no problem by removing the &&^- it's just the negative integers I'm having problems with.

Example:

```
input = console.readLine("?> ").split("\\D+&&^-");

```

Any idea and what I'm doing wrong? Thanks for any help in advance.

Sample input:
-7 \* 4

Output:
-7 and 4 should be stored into an array of strings.

Answer: 
`&&` is **not** an "and" operator inside a regular expression. I figure you meant to use `[^0-9-]+`, right?

I recommend *matching* instead of *splitting*. However, neither will trivially solve the corner case of `-12-34` for you. Splitting will give you a single, non-parseable number. Matching with `-?\d+` will give you two numbers, with nothing inbetween (you could treat that as a default `+` though).
`-\d*` should get you a negative integer. If you need something more sophistocated, such as decimal numbers, have a look at [this link](http://regexlib.com/REDetails.aspx?regexp_id=252).