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Provide an implementation of the type ExtendedStack. ExtendedStack must support the stack operations push, pop, and top, and a new operation findMin, which returns the smallest element in the ExtendedStack, ALL in O(1) worst-case time. Note that findMin returns the minimum value in the extended stack, but do NOT remove it from the structure. you must type the implementation of ExtendedStack as specified below (C++ code).

Provide an implementation of the type ExtendedStack. ExtendedStack must support the stack operations push, pop, and top, and a new operation findMin, which returns the smallest element in the ExtendedStack, ALL in O(1) worst-case time. Note that findMin returns the minimum value in the extended stack, but do NOT remove it from the structure. you must type the implementation of ExtendedStack as specified below (C++ code).

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Provide an implementation of the type ExtendedStack. ExtendedStack must support the stack operations push, pop, and top, and a new operation findMin, which returns the smallest element in the ExtendedStack, ALL in O(1) worst-case time. Note that findMin returns the minimum value in the extended stack, but do NOT remove it from the structure. you must type the implementation of ExtendedStack as specified below (C++ code). Your ExtendedStack can wrap (can be composed of) other ADTS and thus reuse their operatons. you can wrap at most 2 structures (choose from: Stack, Queue, and list); you can select any combination: two queues, a stack and a queue, two stacks, ... Hint: Besides reuse, the purpose of wraping other strucutes in the ExtendedStack is to achieve a O(1) running time for the findMin() operation. If you are using a structure (e.g. Stack s), you do NOT have to implement the structure. just invoke its standard operations (e.g. s.pop(x)).
Transcribed Image Text:Provide an implementation of the type ExtendedStack. ExtendedStack must support the stack operations push, pop, and top, and a new operation findMin, which returns the smallest element in the ExtendedStack, ALL in O(1) worst-case time. Note that findMin returns the minimum value in the extended stack, but do NOT remove it from the structure. you must type the implementation of ExtendedStack as specified below (C++ code). Your ExtendedStack can wrap (can be composed of) other ADTS and thus reuse their operatons. you can wrap at most 2 structures (choose from: Stack, Queue, and list); you can select any combination: two queues, a stack and a queue, two stacks, ... Hint: Besides reuse, the purpose of wraping other strucutes in the ExtendedStack is to achieve a O(1) running time for the findMin() operation. If you are using a structure (e.g. Stack s), you do NOT have to implement the structure. just invoke its standard operations (e.g. s.pop(x)).
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