java, processing Nested Loop?

Question

I use this code:

int contadorA = 1, contadorB = 1;

while (contadorA <= 5) {
    println ("banking " + contadorA);
    contadorA++;

    while (contadorB <= 3) {
         println ("month " + contadorB);
        contadorB++;
    }
}

the code print this:

banking 1
month 1
month 2
month 3
banking 2
banking 3
banking 4
banking 5

AND I NEED THAT PRINT THIS:

banking 1
month 1
month 2
month 3
banking 2
month 1
month 2
month 3
banking 3
month 1
month 2
month 3
banking 4
month 1
month 2
month 3
banking 5
month 1
month 2
month 3

Check the scope of your variables.

Rangi Lin
– Rangi Lin

2011-06-21 05:14:37 +00:00
Commented Jun 21, 2011 at 5:14 — Rangi Lin
– Rangi Lin, Commented Jun 21, 2011 at 5:14

Vineet Reynolds · Accepted Answer · 2011-06-21 05:12:27Z

4

I won't post code, my apologies.

I'll give a hint. In the inner loop, you are not resetting the counter, on entering it. This means that contadorB's value after the execution of the first outer loop is 4, and it will never enter the inner loop again.

Here's another hint. Step through the code in the debugger (and watch the value of contadorB) if you haven't understood my earlier hint.

answered Jun 21, 2011 at 5:12

Vineet Reynolds

76.9k17 gold badges154 silver badges177 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Tremmors · Accepted Answer · 2011-06-21 05:14:20Z

0

You aren't resetting the second counter inside the loop. You need to do this:

int contadorA = 1, contadorB = 1;

while (contadorA <= 5) {

    println ("banking " + contadorA);
    contadorA++;

    contadorB = 1;
    while (contadorB <= 3) {

    println ("month " + contadorB);
    contadorB++;


    }

}

answered Jun 21, 2011 at 5:14

Tremmors

2,98619 silver badges13 bronze badges

3 Comments

user779848 Over a year ago

thanks! that is, yeah, I need reset the counter of the 2nd loop (Im new to programming)

nikhil Over a year ago

I see no point in this spoon feeding here. @Vineet Reynolds had given the correct hint which the op should've followed up on. That way he'd have understood his error better.

Tremmors Over a year ago

I do actually agree. The only reason I posted code is because I overlooked the homework tag. @Vineet Reynolds did post correct information that would have lead the op to the correct answer.

Mahesh · Accepted Answer · 2011-06-21 05:13:10Z

0

Declare the int contadorB = 1; in the first while loop but before second while loop. In other words, you are just resetting the variable for every iteration of the first while loop.

answered Jun 21, 2011 at 5:13

Mahesh

34.7k23 gold badges93 silver badges116 bronze badges

Comments

FishBasketGordo · Accepted Answer · 2011-06-21 05:14:06Z

0

Check the value of contadorB at the end of the second while loop.

answered Jun 21, 2011 at 5:14

FishBasketGordo

23.2k4 gold badges60 silver badges92 bronze badges

Comments

sclarson · Accepted Answer · 2011-06-21 05:15:21Z

0

This code will point out your issue:

int contadorA = 1, contadorB = 1;

while (contadorA <= 5) {
    println ("banking " + contadorA);
    contadorA++;

    while (contadorB <= 3) {
         println ("month " + contadorB);
        contadorB++;
    }
    println ("contadorA: " + contadorA + "\n contadorB: " + contadorB + "\n");
}

answered Jun 21, 2011 at 5:15

sclarson

4,4623 gold badges35 silver badges46 bronze badges

Collectives™ on Stack Overflow

java, processing Nested Loop?

5 Answers 5

Comments

3 Comments

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

5 Answers 5

Comments

3 Comments

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related