Hackoctober/stackreversel at main · May-We-Code/Hackoctober · GitHub

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

#include <bits/stdc++.h>
using namespace std;

void insert_at_bottom(stack<int>& st, int x)
{

	if (st.size() == 0) {
		st.push(x);
	}
	else {


		int a = st.top();
		st.pop();
		insert_at_bottom(st, x);


		st.push(a);
	}
}


void reverse(stack<int>& st)
{
	if (st.size() > 0) {

		int x = st.top();
		st.pop();
		reverse(st);

		insert_at_bottom(st, x);
	}
	return;
}

// Driver Code
int main()
{
	stack<int> st, st2;

	for (int i = 1; i <= 4; i++) {
		st.push(i);
	}

	st2 = st;

	cout << "Original Stack" << endl;

	while (!st2.empty()) {
		cout << st2.top() << " ";
		st2.pop();
	}
	cout<<endl;
	reverse(st);
	cout << "Reversed Stack" << endl;

	while (!st.empty()) {
		cout << st.top() << " ";
		st.pop();
	}
	return 0;
}