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Copy path155.Min Stack.cpp
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43 lines (37 loc) · 739 Bytes
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class MinStack {
stack<int>Stack;
stack<int>StackMin;
public:
/** initialize your data structure here. */
MinStack() {
}
void push(int x)
{
Stack.push(x);
if (StackMin.empty())
StackMin.push(x);
else
StackMin.push(min(x,StackMin.top()));
}
void pop()
{
Stack.pop();
StackMin.pop();
}
int top()
{
return Stack.top();
}
int getMin()
{
return StackMin.top();
}
};
/**
* Your MinStack object will be instantiated and called as such:
* MinStack obj = new MinStack();
* obj.push(x);
* obj.pop();
* int param_3 = obj.top();
* int param_4 = obj.getMin();
*/