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checking among a range of values  RSS feed

 
Ranch Hand
Posts: 208
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Hi,
i remember that in some language , we have a feature that is somewhat similar to this :
int i;
if (i IN (2,5,7, 8,11,13, 12,17))
{
// DO SOMETHING
}
I have used the syntax as a help of course. This is not the way it is in C,C++.
Is there anything similar in Java? Or, do have to cascade in
a switch or else use multiple | | (conditional OR) ?
Shree
 
Ranch Hand
Posts: 347
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Shree,
You could use a set. Here is one example:

Hope this helps.
Stephanie
 
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Posts: 612
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Mac OS X Python
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Shree,
another way to do this is a compound switch statement:class
<pre>
TestSwitch {
public static void main ( String[] args ) {

int i = 2;
switch ( i ) {
case 2:
case 5:
case 7:
case 8:
case 11:
case 13:
case 12:
case 17:
System.out.println("Value Found");
break;
default:
System.out.println("Value not found");
}
}
}
</pre>
But unless i were writting imbedded code (very small) or
extreamly time critical Stephanie's method is far better.
 
shree vijay
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Thanks,

By the way, steve, does a switch become a 'compound switch' when you cascade more than one case statement?

Shree
 
Steve Fahlbusch
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Shree,
Compound Switch {sounds good, but i have never heard of such
a creature - but then there an awful lot i don't know}
Steve
 
Ranch Hand
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Steve,
You wrote;

Shree,
another way to do this is a compound switch statement:class


He asking you what you meant by that. I think you mean a cascading switch, very populat in C++.
Shree,
Steve is right, Stephs concept is a little better, both require hard coding of the data, something that gives Apu a brain freeze faster than engulfing squishees, but...
A compound switch would indeed imply a switch statement inside another's case. Though, I am having trouble try to come up with a good reason to do this, wait...

something like that, though there may be more elegant ways.
 
It is sorta covered in the JavaRanch Style Guide.
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