4 replies to this topic

[abderrahim]

Hi everybody,
Is there a solution to avoid those ORs

char c;

c='a';

if (c=='a') || (c=='z') || (c=='r') {System.out.println(c);}

 

I used to do it in pascal like

if c in ['a','z','r'] then

[TheCompBoy]

You could maybe use a switch statement:

switch(c)

{

    case a:

             System.out.println(c);

             break;

    case z:

             System.out.println(c);

             break;

    case r:

             System.out.println(c);

             break;

}

[Sinipull]

TheCompBoy, that's even more repetitive.

In case you have lot of chars you can use this:

        char c = 'z';        
        Character[] chars = new Character[]{'a','z','r'};
        HashSet<Character> set = new HashSet<Character>(Arrays.asList(chars));
        if(set.contains(c)){
            System.out.println("Set contains: "+c);            
        } else System.out.println("Set doesn't contain: "+c);
        

[abderrahim]

Thank you very much,
since the switch statement has no place for an instruction that runs in all conditions(as I know!), we must put System.out.println each time, is there a solution to avoid repitition??

[bigneo]

can you not use shared cases in switch method like this?

switch (c)

{

   case a:

   case z:

   case r: System.out.print("\nc");

}