Q. No. 4: Trace the following code. int main() { int [] values = {1, 3, 5, 7, 9, 11, 13, 15, 17, 19); Stack s = new Stack(); for (int 1 = 0; i < values.length; i++) s.push( values[i]); int n = 25; for (int i = 0; i < 4; i++) { n + s.pop(); } for { (int i= 0; i < 2; i++) ns.pop(); } cout<< n; }
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- Suppose you have a stack with a maximum size of 1000 elements and you want to perform the following operations: Push 500 elements onto the stack. Pop 200 elements from the stack. Push 800 elements onto the stack. Pop all remaining elements from the stack. What is the final size of the stack after performing all these operations?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] )Consider the following statements: stackType<int> stack; int x; Suppose that the input is: 14 53 34 32 13 5 -999 Show what is output by the following segment of code: cin >> x; while (x != -999) { if (x % 2 == 0) { if (!stack.isFullStack()) stack.push(x); } else cout << "x = " << x << endl; cin >> x; } cout << "Stack Elements: "; while (!stack.isEmptyStack()) { cout << " " << stack.top(); stack.pop(); } cout << endl;
- Write a program in c or c++ to implement a Stack using array. In order to implement the stack, programfor following stack operations has to be written: • void push(int): to insert data onto the stack.• Int pop(): to remove and return the last inserted element from the stack.• Int top(): Returns the last inserted element without removing it.• int Size(): Returns the number of elements stored in the stack.• int IsEmptyStack(): Indicates whether any elements are stored in the stack or not.• int IsFullStack(): Indicates whether the stack is full or not.IN JAVA First, Implement the method public void display() which displays the entries in a stack starting from the top. If the stack is empty, print “The stack is empty”. Add the method to ArrrayStack2.java. You do not need to modify StackInterface.java. Then, Implement a method public int remove(int n) The method removes the n top most entries for a stack . If the stack contains less than n items, the stack becomes empty. The method returns the number of items removed. Add the method to ArrrayStack2.java. You do not need to modify StackInterface.java. Then, Suppose that in the array-based stack, the array doubles in size after multiple push operations. But later on, fewer than half of the array’s locations might actually be used by the stack due to pop operations. Revise the implementation so that its array also can shrink in size as objects are removed from the stack. Accomplishing this task will require two new private methods, as follows: The first new method checks whether we…given code lab4 #include <stdio.h>#include <stdlib.h> /* typical C boolean set-up */#define TRUE 1#define FALSE 0 typedef struct StackStruct{int* darr; /* pointer to dynamic array */int size; /* amount of space allocated */int inUse; /* top of stack indicator - counts how many values are on the stack */} Stack; void init (Stack* s){s->size = 2;s->darr = (int*) malloc ( sizeof (int) * s->size );s->inUse = 0;} void push (Stack* s, int val){/* QUESTION 7 *//* check if enough space currently on stack and grow if needed */ /* add val onto stack */s->darr[s->inUse] = val;s->inUse = s->inUse + 1;} int isEmpty (Stack* s){if ( s->inUse == 0)return TRUE;elsereturn FALSE;} int top (Stack* s){return ( s->darr[s->inUse-1] );} /* QUESTION 9.1 */void pop (Stack* s){if (isEmpty(s) == FALSE)s->inUse = s->inUse - 1;} void reset (Stack* s){/* Question 10: how to make the stack empty? */ } int main (int argc, char** argv){Stack st1; init (&st1);…
- JAVA Suppose that the ADT stack included a void method remove(n) that removes the topmost n entries from a stack. Define and implement the method so that it performs the task of removing first n entries. If the stack does not contain n elements, remove all elements from the stack.Sort the stack values either ascending or descending without using stack builtin classes for example Stack before sorting : 5 | -2 | 9 | -7 | 3 where 3 is the top elementStack after sorting : -7 | -2 | 3 | 5 | 9 where 9 is the top element by using c/c++ labguageStack, Queue and Deque5.1. Understand the basic operations for Stack, Queue and DequeExample: Suppose that Queue q is implemented by a circular array data with the size 3. Please drawthe state of the Queue q and circular array data after each of the following steps.1) Queue q = new Queue();2) q.enqueue(5);3) q.enqueue (2);4) q.enqueue (9);
- Code in C One of the applications of a stack is to backtrack - that is, to retrace its steps. As an example, imagine we want to read a list of items, and each time we read a negative number we must backtrack and print the five numbers that come before the negative number and then discard the negative number. Use a stack to solve this problem. Use a stack and push them into the stack (without printing them) until a negative number is read. At this time, stop reading and pop five items from the stack and print them. If there are fewer than five items in the stack, print an error message and stop the program. After printing the five items, resume reading data and placing them in the stack. When the end of the file is detected, print the message and the items remaining in the stack. Sample Output 1 2 3 4 5 6 7 -1 7 6 5 4 3 9 6 4 3 -2 3 4 6 9 2 -3 Number of items left is less than five! Program is terminating! Project name : Backtrack Filenames: backtrack.h, backtrack.c,…A data structure known as a drop-out stack functions exactly like a stack, with the exception that if the stack size is n, the first element is lost when the n + 1 element is pushed. Use an array to implement a drop-out stack. (Hint: It would make sense to implement a circular array.)C# Display the stack with the given information: int topNum; NumberStack stack2 = new NumberStack(5); stack2.Push(5);stack2.Push(7);stack2.Push(12);stack2.Push(3); public void PrintStack() { //Loop through each element of the stack and display it for (int i = size - 1 ; i >= 0; i--) { Console.WriteLine(stack[i]); } }