Zomato Order History LIFO Stack
Zomato Order History LIFO Stack
EasyStacks0% accepted
Zomato keeps order history as a stack. Implement push, pop, top, and getMin (minimum in O(1)) operations.
Approach
Design a stack that supports push, pop, top, and getMin in O(1).
Input
push(-2)
push(0)
push(-3)
getMin()
pop()
top()
getMin()
Output
-3 0 -2
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