Put chars from String into alfabetical order

[Michael]

Hi, Im stuck.
I want to have a method with:
- a parameter String s
- in the body it breaks the String s apart into chars then the chars
are put into alfabetical order.
- the return would give a String in alfabetical order.

In other words:
private String scramble(String s)
{
// put the chars from the string into alfatbetical order (black box)
return s;
}

Any suggestions?

Regards,

Michael (The Netherlands)

 

[Patricia Shanahan]

Hi, Im stuck.
I want to have a method with:
- a parameter String s
- in the body it breaks the String s apart into chars then the chars
are put into alfabetical order.
- the return would give a String in alfabetical order.

In other words:
private String scramble(String s)
{
// put the chars from the string into alfatbetical order (black box)
return s;
}

Any suggestions?

Regards,

Michael (The Netherlands)

Read the API documentation for each of these:

String method toCharArray. java.util.Arrays, String constructors.

Patricia

 

[Michael]

Thanks, these libraries are great
My solution:


private String scramble(String s)
{
int i;
String result ="";
char [] chararray;
chararray = s.toCharArray();
Arrays.sort(chararray);

for(i=0; i<s.length(); i++)
{
result+=chararray;
}
return result;
}

 

[Patricia Shanahan]

Thanks, these libraries are great
My solution:


private String scramble(String s)
{
int i;
String result ="";
char [] chararray;
chararray = s.toCharArray();
Arrays.sort(chararray);

for(i=0; i<s.length(); i++)
{
result+=chararray;
}
return result;
}

You can make this better by taking another look at the String constructors.

Patricia

 

[Roedy Green]

private String scramble(String s)
{
// put the chars from the string into alfatbetical order (black box)
return s;
}

you could look on this as:


1. how do I convert String to char[] ( see
http://mindprod.com/applets/converter.html )

2. how do I sort the char[] (see http://mindprod.com/jgloss/sort.html
)

3. how do I convert the char[] back to a String ( see
http://mindprod.com/applets/converter.html )

 

[Greg R. Broderick]

Thanks, these libraries are great

Depending on what sort of course this program is for, your professor may want
you to implement your own sort rather than using a library implementation.


Cheers
GRB


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