GATE | GATE-CS-2016 (Set 1) | Question 45
What will be the output of the following JAVA program?
Java
class GFG
{
static int d= 1 ;
static void count( int n)
{
System.out.print(n+ " " );
System.out.print(d+ " " );
d++;
if (n > 1 ) count(n- 1 );
System.out.print(d+ " " );
}
public static void main(String args[])
{
count( 3 );
}
}
|
(A)
3 1 2 2 1 3 4 4 4
(B)
3 1 2 1 1 1 2 2 2
(C)
3 1 2 2 1 3 4
(D)
3 1 2 1 1 1 2
Answer: (A)
Explanation:
count(3) will print value of n and d. So 3 1 will be printed
and d will become 2.
Then count(2) will be called. It will print value of n and d.
So 2 2 will be printed and d will become 3.
Then count(1) will be called. It will print value of n and d.
So 1 3 will be printed and d will become 4.
Now count(1) will print value of d which is 4. count(1) will
finish its execution.
Then count(2) will print value of d which is 4.
Similarly, count(3) will print value of d which is 4.
Hence (A) is the correct answer.
Quiz of this Question
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Last Updated :
12 Aug, 2021
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