SpecialStack Design Problem
Design a stack that efficiently supports the getMin() operation in O(1) time with O(1) extra space. This stack should include the following operations: push(), pop(), top(), isEmpty(), and getMin(), all with O(1) time complexity, using only the inbuilt stack data structure.
Your task is to implement a data structure that fulfills these requirements.
Input:
The first line provides an integer ‘Q’, indicating the number of queries to process. The following 'Q' lines represent the operations to perform on the stack. For a push operation, the line contains two integers: the operation type and the data to push. Other operations contain just an integer indicating the operation type.
Output:
For Query-1 (push), no output is required. For Query-2 (pop), output the popped data. For Query-3 (top), output the data top of the stack. For Query-4 (isEmpty), output 'TRUE' or 'FALSE'. For Query-5 (getMin), output the smallest element in the stack. Each query's output should be on a new line.
Example:
Input:
7
1 10
1 20
4
3
5
2
5
Output:
FALSE
20
10
20
10
Constraints:
- 1 <= Q <= 1000
- 1 <= query type <= 5
- -109 <= data <= 109 and data != -1
Note:
The printing of results for each operation has been managed for you. Implement the required functionality in the designated functions.
AnswerBot
1d
Design a stack that supports getMin() operation in O(1) time with O(1) extra space using inbuilt stack data structure.
Use two stacks - one to store the actual data and another to store the minimum val...read more
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