COMPUTER SCIENCE AND ENGINEERING
DATA STRUCTURES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A data structure where only the top element can be accessed
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A data structure where only the bottom element can be accessed
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A data structure where groups are separated
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None of the other options
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Detailed explanation-1: -A stack is a limited access data structure-elements can be added and removed from the stack only at the top. push adds an item to the top of the stack, pop removes the item from the top. A helpful analogy is to think of a stack of books; you can remove only the top book, also you can add a new book on the top.
Detailed explanation-2: -top() is used to access the element at the top of the stack container. In a stack, the top element is the element that is inserted at the last or most recently inserted element.
Detailed explanation-3: -stack top() in C++ STL Stacks are a type of container adaptors with LIFO(Last In First Out) type of work, where a new element is added at one end called the top of the stack, and an element is removed from the same end only. stack::top() top() function is used to reference the top(or the newest) element of the stack.
Detailed explanation-4: -A stack has a restriction that insertion and deletion of element can only be done from only one end of stack and we call that position as top. The element at top position is called top element.
Detailed explanation-5: -A stack is a data structure in which only the top element can be accessed. As data is stored in the stack, each data is pushed downward, leaving the most recently added data on top. A binary search tree stores data in such a way that they can be retrieved very efficiently.