You are given a mathematical expression in postfix notation (RPN). During the postfix expression evaluation algorithm, enter the value that would be at the bottom of the stack after processing the 6th token on the following input: 372- +6 * (Note this is not about expression trees, this is just the stack-based algorithm for evaluating a post fix expression.)

You are given a mathematical expression in postfix notation (RPN). During the postfix expression evaluation algorithm, enter the value that would be at the bottom of the stack after processing the 6th token on the following input: 372- +6 * (Note this is not about expression trees, this is just the stack-based algorithm for evaluating a post fix expression.)

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter18: Stacks And Queues

Section: Chapter Questions

Problem 21SA

See similar textbooks

Similar questions

You are given N elements and your task is to Implement a Stack in which you can get a minimum element in O(1) time. Example 1: Input: push(2) push(3) pop() getMin() push(1) getMin() Output: 2 1 Explanation: In the first test case for query push(2) Insert 2 into the stack. The stack will be {2} push(3) Insert 3 into the stack. The stack will be {2 3} pop() Remove top element from stack Poped element will be 3 the stack will be {2} getMin() Return the minimum element min element will be 2 push(1) Insert 1 into the stack. The stack will be {2 1} getMin() Return the minimum element min element will be 1.
What is the value of the following postfix expressions? Show the stack contents as each operand and operator is processed. Make it clear where the top of the stack is at each step? 5 1 / 3 * 3 1 – *
Code with comments and output screenshot is must for an Upvote Create a Java function that uses a stack and no arithmetic to compare the number of 0's and 1's in a string. If # of 0's is greater, return -1. If # of 1's is greater, return 1. If equal, return 0.
Show the contents of the stack as you trace the algorithm check balance
Suppose that we are asked to run the program and when our program reaches to line 23, weare also asked to take a snapshot of our program’s run-time stack. So, please draw full ARIsof the all subprograms which are placed in the stack at line 23.
if a stack contained the entries 128, 90, 56, 341 (from top to bottom), what would be at the top of the stack after the statement push(106) is executed?
In the following code, assume myStack is a stack that holds integers. What would be the contents of the stack after the following operations, indicating what element is currently at the top and the bottom of the stack. myStack.push(1);myStack.push(2);myStack.push(3);myStack.pop();myStack.push(4);myStack.push(5);myStack.pop(); Group of answer choices 4 <- Top21 <- Bottom 5 <- Top31 <- Bottom 4 <- Top32 <- Bottom 5 <- Top21 <- Bottom
A stack is very useful in situations when data have to be stored and then retrieved in the —- order. A) same B) reverse C) ascending D) descending
Write a stack-based algorithm that will check a sequence of tokens to see if it is a valid postfix expression. For example, 1 3 * + and + 4 10 are not well formed. (Hint: adapt the postfix evaluation algorithm.)
: How would you design a stack which, in addition to push and pop, has a function min which returns the minimum element? Push, pop and min should all operate in 0(1) time.
Write a Java public static general function which doesn't belong to the Stack class, isGreaterThan that determines if one stack is greater than another stack. If the summation of every other item(starting at the top) from one stack is greater than the summation of every other item(starting at the top) from another, return true, otherwise, return false. After you call this method, both stacks should stay the same as they are called before. Receives: a Stack type argument S1 and another Stack type argument S2 Postcondition: If the summation of every other item (starting at the top) from S1 is greater than the summation of every other item (starting at the top) from S2, return true, otherwise, return false. Both S1 and S2 should stay the same as they are called before. public static boolean isGreaterThan(Stack S1, Stack S2)
takes as input a string (array of characters) and, returns as output the mirror view of the string. That is, if the input is "ABCD", the output is "DCBA". For this, you can read the string character by character and push it to a stack. When you finish reading the whole string, the reverse of the string can be achieved by simply popping element by element from the stack and adding the popped elements to a new string that is returned.