Descriptio: I am learning about debugging and simulation. however i keep gettings this error line on my code. see the pics
package queuedemo;
class Queue {
int front, rear, size;
int capacity;
int array[];
public Queue(int cap)
{
capacity = cap;
front=size=0;
rear=capacity-1;
array = new int[capacity];
}
// Method to add an item to the queue.
void enqueue(int item)
{
if(isFull()) {
System.out.println("Queue overflow");
return;
}
rear=(rear+1)%capacity;
array[rear]=item;
size=size+1;
}
// Queue is empty when size is 0
boolean isEmpty()
{
return (size == 0);
}
// Queue is full when size becomes equal to the capacity
boolean isFull()
{
return (size == capacity);
}
// Method to remove an item from queue.
int dequeue()
{
if (isEmpty())
System.out.println("Queue Underflow");
return;
}
int item = array[front];
front = (front + 1)% this.capacity;
size = size - 1 ;
return item;
}
// Method to get front of queue
int front()
{
return array[front];
}
// Method to get rear of queue
int rear()
{
return array[rear];
}
}
new file:
package DSA;
public class QueueTester {
public static void main(String[] args){
Queue q = new Queue(5);
q.enqueue(5);
System.out.println("front:"+q.front());
q.enqueue(3);
System.out.println("rear:"+q.rear());
q.enqueue(7);
System.out.println("front:"+q.front());
q.enqueue(9);
System.out.println("rear:"+q.rear());
q.enqueue(11);
System.out.println("front:"+q.front());
System.out.println("rear:"+q.rear());
q.enqueue(15);
q.dequeue();
q.dequeue();
System.out.println("front:"+q.front());
System.out.println("rear:"+q.rear());
q.dequeue();
q.dequeue();
q.dequeue();
q.dequeue();
}
}
Descriptio: I am learning about debugging and simulation. however i keep gettings this error line on my code. see the pics
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}
// Method to remove an item from queue.
int dequeue( )
{
if (isEmpty())
System.out.println("Queue Underflow");
return;
www
}
int item = array[front]; {;
front = (front + 1)% this.capacity;
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size = size
1 ;
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return item:
}
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