Cant Understand what is going wrong

#1

Ive written the code, according to me it should be correct. I am confused on how to take an another integer input when sa==2.
ArrayList list=new ArrayList();
for(int i=0;i<n;i++) {
int sa=s.nextInt();
if(sa==2) {
int cost=s.nextInt();
stack.push(cost);
}
else if(sa==1&&!list.isEmpty()) {
list.add(stack.pop());
}
}
for(int i:list) {
System.out.println(i);
}

#2

hey @Rishabh8488 If the pile is empty, print “No Code”

#3

It is not working on eclipse also.
Also to print No Code should I print it int the codition sa==1 and break the for loop after that?
One test case is able to run.
Can you point out what is wrong in my code and how to fix it?

#4

code is fine
just a change
if(s==1) {
if(stack.isEmpty()){
System.out.println(“No Code”);
}
else
System.out.println(stack.pop());
}

#5

just a change
else if(s==1) {
if(!stack.isEmpty()){
list.add(stack.pop());
}
else {
System.out.println(“No Code”);
}
}