-
Notifications
You must be signed in to change notification settings - Fork 0
/
155_Min_Stack.cpp
65 lines (58 loc) · 1.03 KB
/
155_Min_Stack.cpp
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
#include<vector>
#include<stack>
#include<iostream>
using namespace std;
static const auto x=[](){
std::ios::sync_with_stdio(false);
std:cin.tie(nullptr);
return nullptr;
}();
class MinStack
{
private:
stack<int> sdata,smin;
public:
/** initialize your data structure here. */
MinStack()
{
}
void push(int x)
{
sdata.push(x);
if(not smin.empty())
{
if( x <= smin.top())
smin.push(x);
}
else
smin.push(x);
}
void pop()
{
if( sdata.empty() || smin.empty())
return;
int x = sdata.top();
sdata.pop();
if( x == smin.top())
smin.pop();
}
int top()
{
return sdata.top();
}
int getMin()
{
return smin.top();
}
};
int main()
{
MinStack ms;
ms.push(1);
ms.push(-1);
ms.push(-1);
cout<<ms.getMin()<<stdl;
ms.pop();
cout<<ms.getMin()<<stdl;
return 0;
}