Questions and Answers of Stack
Yes/No Questions and Answers of Stack 1.) Is the insertion and deletion of elements in a stack performed from the same endpoint? Ans: Yes, the insertion and deletion of elements in a stack is performed from the same endpoint. 2.) What error occurs when a stack exceeds its capacity? Ans: Stack overflow occurs when a stack exceeds its capacity. 3.) Can a stack be implemented using both arrays and linked lists? Ans: Yes, a stack can be implemented using both arrays and linked lists. 4.) Can a stack contain duplicate elements? Ans: Yes, a stack can contain duplicate elements. 5.) If a stack is implemented using a linked list, will it have a fixed size? Ans: No, a stack implemented using a linked list typically does not have a fixed size. 6.) Is it possible to implement a stack using recursion? Ans: Yes, a stack can be implemented using recursion, but it’s not a recommended approach due to potential stack overflow issues. 7.) Does a stack support random access to its elements? Ans: No, a stack does not support random access to its elements. It follows the Last In, First Out (LIFO) principle, allowing access only to the topmost element. 8.) Is the size of a stack fixed in array-based implementation? Ans: Yes, the size of a stack fixed is in array-based implementation. 9.) Can a stack implemented using a linked list dynamically adjust its size? Ans: Yes, a stack implemented using a linked list can dynamically adjust its size. 10.) Is it possible to directly access any element in a linked list implementation of a stack? Ans: No, it is not possible to directly access any element in a linked list implementation of a stack. 11.) Do linked lists use more memory than arrays for stack implementation? Ans: Yes, linked lists use more memory than arrays for stack implementation. 12.) Can a stack be used to reverse the order of elements in an array? Ans: Yes, a stack can be used to reverse the order of elements in an array. 13.) Can a stack be used for converting one form of expression to another form, such as infix to postfix? Ans: Yes, a stack cam be used for converting one form of expression to another form, such as infix to postfix. 14.) Is postfix notation also known as Reverse Polish Notation (RPN)? Ans: Yes, postfix notation is also known as Reverse Polish Notation (RPN). 15.) Does the conversion from infix to postfix expression require parentheses handling? Ans: Yes, the conversion from infix to postfix expression requires parentheses handling. 16.) Is the precedence of operators the same in both infix and postfix notations? Ans: No, the precedence of operators is not the same in both infix and postfix notations. 17.) Can you use the Stack class for both stack and queue operations? Ans: No, you cannot use the Stack class for both stack and queue operations. 18.) Is the Deque interface limited to stack operations only? Ans: No, it supports both stack and queue operations. 19.) Can you implement a stack using the ArrayDeque class? Ans: Yes, you can implement a stack using the ArrayDeque class. 20.) Can the Deque interface be used only as a stack? Ans: No, it can also be used as a queue. Short Questions and Answers of Stack 1.) Discuss the advantages and disadvantages of using a stack data structure in programming. Ans: Advantages include simple implementation, efficient memory management, support for recursion, and function call management. • Disadvantages include limited access, fixed size constraints, suitability issues for certain problems, and potential memory management concerns. 2.) Explain the role of stacks in function call management and memory management in programming languages. Ans: Stacks are crucial for managing function calls, local variables, and program execution flow in programming languages. They allow for nested function calls, proper variable scoping, and efficient memory management by utilizing a fixed amount of memory for function calls and local variables. Stacks facilitate the implementation of recursion, undo mechanisms, and other important programming features. 3.) Explain the Last In, First Out (LIFO) principle in the context of stacks. Ans: The Last In, First Out (LIFO) principle in stacks means that the last element added to the stack will be the first one to be removed. In other words, the most recently added element is the one that gets removed first. 4.) Describe the significance of the push and pop operations in stack data structure. Ans: The push operation adds an element to the top of the stack, while the pop operation removes the top element from the stack. These operations are fundamental to manipulating the contents of the stack, allowing for the addition and removal of elements in accordance with the Last In, First Out (LIFO) principle. 5.) What are the implications of a “stack overflow” error? How can it be mitigated? Ans: A “stack overflow” error occurs when the stack exceeds its maximum capacity, typically due to excessive recursion or insufficient memory allocation. • To mitigate this error, programmers can increase the stack size if possible, optimize recursive algorithms, or refactor the code to use iterative approaches where appropriate. 6.) What is the difference between a stack and a queue data structure? Ans: The main difference between a stack and a queue data structure is in the order of element removal. In a stack, the Last In, First Out (LIFO) principle is followed, meaning that the most recently added element is the first one to be removed. In contrast, a queue follows the First In, First Out (FIFO) principle, where the element that has been in the queue the longest is the first one to be removed. 7.) How does a stack facilitate function calls in programming languages? Ans: A stack facilitates function calls in programming languages by maintaining a stack frame for each function call. When a function is called, its local variables and return address are stored in a stack frame, allowing for nested function calls and proper
