Consider the following postfix expression: 93*35+72-4++- Use an empty stack to evaluate it. Show the content of the stack after every push and pop operation. You can perform the consecutive push operations on the same stack (column) and upon pop, update the stack on the next stack (column). Stackl Stack2 Stack3 Stack4 Stack5 Stack6 Stack7 Stack8

Consider the following postfix expression: 93*35+72-4++- Use an empty stack to evaluate it. Show the content of the stack after every push and pop operation. You can perform the consecutive push operations on the same stack (column) and upon pop, update the stack on the next stack (column). Stackl Stack2 Stack3 Stack4 Stack5 Stack6 Stack7 Stack8

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

Section: Chapter Questions

Problem 1PE

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See how the stack performs when given the freedom to be itself.
You are only alowed to use the following stack mothods isEmptyt), push), popl). topt), sizel) Question: Wite a method, exchange, that takes a Stack object as a parameter and exchanges the second element from the top and the second element from the bottom while the order of the othec elements remains unchanged public statie Stack exchange(Stack stack) Example: Input stack (1, 2, 3, 4, 5, 6) (top = 1) Output stack = (1, 5, 3, 4, 2. 6) (top = 1) Note: You can use additional stacks andior variables as temporary containers.
suf: C nn.instru @ 2 S if the stack contains (from top) "5", "4", "3", "2", "1" and element = "new", the stack will contain "5", "4", "3", "new", "new" after interchange (). if the stack contains (from top) "5" and element "new", the stack will contain "new", "new" after interchange(). 30% Write public instanc method for MyStáck, called interchange (T element) to replac the bottom *two* items in the stack with element. wer than two items on the stack, upon return the stack should contain exactly two items that are element. Examples: F2 # ۲ 3 ۳ WE E ص X Assume class MyStack implements the following StackGen interface. For this question, make no assumptions about the implementation of MyStack except that the follo wing interface methods are implemented and work as documented. public interface StackGen { void push(T 0); // conventional stack behavior T pop(); // conventional stack behavior T top(); // returns, but does not remove, top element in stack boolean isEmpty(); // returns true…
Consider the following stack, which can be written as [70, 10, 50, 80, 20] i.e. the "top" of the stack is the first element in the list Consider the following code (written as pseudocode): myfunction( stack1 ) stack2 = createStack() while stack1 is NOT empty value = top(stack1) pop(stack1) while stack2 is NOT empty and top(stack2) > value push(stack1, top(stack2)) pop(stack2) push(stack2, value) print(stack2) // Prints the current stack as [element_1, element_2, ..., element_n] return stack2 From the answers below, select the correct output for the first 4 print statements if myFunction is executed with: myFunction( [ 70, 10, 50, 80, 20] )
Write the program by completing the main program that doesthe following:1. Call the push function three times.2. Prints out the updated stack3. Calls the pop function once4. Print the updated stack again.No need to write the algorithm for this problem, it is already given to you.#include <stdio.h>#define STACK_EMPTY '0'#define STACK_SIZE 20voidpush(char stack[], /* input/output - the stack */char item, /* input - data being pushed onto the stack */int *top, /* input/output - pointer to top of stack */int max_size) /* input - maximum size of stack */{if (*top < max_size-1) {++(*top);stack[*top] = item;}}charpop (char stack[], /* input/output - the stack */int *top) /* input/output - pointer to top of stack */{char item; /* value popped off the stack */if (*top >= 0) {item = stack[*top];--(*top);} else {item = STACK_EMPTY;}return (item);}intmain (void){char s [STACK_SIZE];int s_top = -1; // stack is empty/* complete the program here */return (0);}
Python: using a stack, implement a function that takes in an arithmetic expression, and evaluates it. Supported operations are + and -, which have the same precedence.
How to remove the top piece from stack?
Determine the stack's efficacy when allowed to be who it is.
Code with comments and output screenshot
Please show Stack.h, Stack.cpp and main.cpp
See how the stack fares when allowed to be itself.