Training-/StackImplt.java at main · ShraddhaPawar05/Training- · GitHub

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import java.util.Stack;

public class StackImplt {


    static int max;
    static public int stack[];
    static int top=-1;
    static int val;


    public static void push(int data)
    {
        if(top==max-1)
        {
            System.out.println("Stack is Overflow you can not insert element...");
            return;
        }
        top+=1;
        stack[top]=data;
    }


    public static int pop()
    {
        if(top==-1)
        {
            System.out.println("Stack is underflow first insert elements in stack");
            return -1;
        }
        val=stack[top];
        top-=1;
        return val;
    }

    public static int peek()
    {
        if(top==-1)
        {
            System.out.println("Stack is underflow first insert elements in stack");
            return -1;
        }
        val=stack[top];
        return val;
    }

    public static void print()
    {
        if(top==-1)
        {
            System.out.println("Stack is underflow first insert elements in stack");
            return;
        }
        for(int i=0;i<=top;i++)
        {
            System.out.print(stack[i]+" ");
        }
        System.err.println();
    }

    public static void main(String[] args) {

    }


}