-
Notifications
You must be signed in to change notification settings - Fork 0
/
Stack.java
88 lines (70 loc) · 1.65 KB
/
Stack.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
/*
Write a Java program to implement the Stack using arrays. Write Push(), Pop(), and
Display() methods to demonstrate its working.
*/
import java.io.*;
import java.util.*;
class Stack
{
int top=-1;
public static void main(String args[])
{
Scanner s=new Scanner(System.in);
//Input size of stack
System.out.println("Enter Stack Size :");
int n=s.nextInt();
//Create a stack of size n
int stk[]=new int[n];
//Create a stack object
Stack St =new Stack();
//Create a menu driver
while(true)
{
System.out.println("\n\n========================================\n");
System.out.println("\t\t Menu ");
System.out.println("========================================");
System.out.println("1.PUSH\n2.POP\n3.Display\n4.EXIT");
System.out.println("Enter the option number :");
int op=s.nextInt();
switch(op)
{
case 1: System.out.println("Enter Element to push:");int ele=s.nextInt();
St.push(n,ele,stk);
break;
case 2: St.pop(n,stk);break;
case 3: St.disp(n,stk);break;
case 4: System.exit(0);
}
}
}
void push(int n,int e,int stk[])
{
if(top<n-1)
{
top++;stk[top]=e;
}
else
System.out.println("OVERFLOW!!!!");
}
void pop(int n,int stk[])
{
if(top<0)
System.out.println("Underflow!!!!!!!!");
else
{
System.out.println("Poped item is : "+stk[top]);
top--;
}
}
void disp(int n,int stk[])
{ System.out.println("========================================");
System.out.println("\t\t Stack ");
int i=top;
while(i!=-1)
{
System.out.println("\t\t "+stk[i]);
i--;
}
System.out.println("========================================");
}
}