String.split() method question?

[au.danji]

Hello all, I have a question about the String split method.

I have a string s1:
String s1 = "a \"single unit\" test";
String[] strArr = s1.split(" ");

the result is:

strArr[0]: a
strArr[1]: "single
strArr[2]: unit"
strArr[3]: test


but I want to let "single unit" to be in the same array element, just
like this:
strArr[0]: a
strArr[1]: "single unit"
strArr[2]: test

Can anybody tell me how to do that? should I use the regular
expression?
Thanks a lot!

 

[Abhishek]

Hello all, I have a question about the String split method.

I have a string s1:
String s1 = "a \"single unit\" test";
String[] strArr = s1.split(" ");

the result is:

strArr[0]: a
strArr[1]: "single
strArr[2]: unit"
strArr[3]: test

but I want to let "single unit" to be in the same array element, just
like this:
strArr[0]: a
strArr[1]: "single unit"
strArr[2]: test

Can anybody tell me how to do that? should I use the regular
expression?
Thanks a lot!

Why don't you try concatenating the two strings after they have been
split?
once you encounter a string "single which starts with quotes, try
concatenating the following strings till you encounter something which
ends with a quote unit" .

Abhishek

 

[Stefan Ram]

String s1 = "a \"single unit\" test";
strArr[0]: a
strArr[1]: "single unit"
strArr[2]: test
Can anybody tell me how to do that?

public class Main
{ public static void main
( final java.lang.String[] args )
{ java.lang.System.out.println
( java.util.Arrays.toString
( "a \"single unit\" test".split
( "(?: (?=\"))|(??<=\") )" ))); }}

[a, "single unit", test]

 

[Hal Rosser]

Hello all, I have a question about the String split method.

I have a string s1:
String s1 = "a \"single unit\" test";
String[] strArr = s1.split(" ");

the result is:

strArr[0]: a
strArr[1]: "single
strArr[2]: unit"
strArr[3]: test


but I want to let "single unit" to be in the same array element, just
like this:
strArr[0]: a
strArr[1]: "single unit"
strArr[2]: test

Can anybody tell me how to do that? should I use the regular
expression?
Thanks a lot!

If you didn't need to keep the quotes intact with the string, you could
split on the quote.
String[] strArr = s1.split("\"");

I guess you could add the quotes back.
strArr[1] = "\"" + strArr[1] + "\"";
.... You could just get the array length and add the quotes to all elements
that do not begin and end with a space.
Since you split the string on the quote marks, the parts of the string that
had quotes around it will probably begin with a regular word character, and
not a space.

 

[au.danji]

String s1 = "a \"single unit\" test";
strArr[0]: a
strArr[1]: "single unit"
strArr[2]: test
Can anybody tell me how to do that?

public class Main
{ public static void main
( final java.lang.String[] args )
{ java.lang.System.out.println
( java.util.Arrays.toString
( "a \"single unit\" test".split
( "(?: (?=\"))|(??<=\") )" ))); }}

[a, "single unit", test]

Hi, thanks a lot for your help, if I need to split a string like this:
"this is a \"single unit\" test another "second unit" one"
is it possible to get results:

a[0] = this
a[1] = is
a[2] = a
a[3] = single unit
a[4] = test
a[5] = another
a[6] = second unit
a[7] = one

Most appreciate!

 

[Stefan Ram]

"this is a \"single unit\" test another "second unit" one"
is it possible to get results:
a[0] = this
a[1] = is
a[2] = a
a[3] = single unit
a[4] = test
a[5] = another
a[6] = second unit
a[7] = one

public class Main
{ public static void main
( final java.lang.String[] args )
{ java.lang.System.out.println
( java.util.Arrays.toString
( "this is a \"single unit\" test another \"second unit\" one".split
( "(?<!\"\\w{1,32}) (?!\\w+\")" ))); }}

[this, is, a, "single unit", test, another, "second unit", one]

 

[Roedy Green]

Can anybody tell me how to do that? should I use the regular
expression?

Anything to do with balancing delimiters tends to overamp a regex. You
will have an easier time with a miniature parser instead, perhaps one
you write with indexOf and charAt.

see http://mindprod.com/jgloss/parser.html
http://mindprod.com/jgloss/regex.html