# cannot contain syntax error # stack class class Stack: def __init__(self, iL=[]): self.aList = iL[:] def push(self, newElem:int): """push a new element on top""" self.aList.append(newElem) def pop(self)->int: """return top item""" return self.aList.pop() def empty(self): """Is the stack empty?""" return self.aList == [] def __repr__(self): return repr(self.aList) # use only the above stack methods to define a function to # delete an item x from a stack, (only one x (the upper one) is to be deleted) # keep the order of the remaining items in the stack unchanged # can change orginal stack # return a new stack def delx(sk:Stack, x:'item')-> Stack: #Code goes here if __name__ == "__main__": #Testing code here

Data Structures/Algorithms in Java

What happens when a programmer attempts to access a node's data fields when the node variable refers to None? How do you guard against it? *PYTHON

1 Assume some Node class with info & link fields. Complete this method in class List that returns a reference to the node containing the data item in the argument find This, Assume that find this is in the list public class List { protected Node head; protected int size; fublic Public Node find (char find This)

Question 10 (1 point)   ListenReadSpeaker webReader: Listen Given the following code, assume the myStack object is a stack that can hold integers and  that value is an int variable.1   myStack.push(0);2   myStack.push(1);3   myStack.push(2);4   myStack.pop(value);5   myStack.push(3);6   myStack.pop(value);7   Console.WriteLine(value);Assume that the pop function, called on lines 4 and 6, stores the number popped from the stack in the value variable. What will the statement on line 7 display? Question 10 options:   a)  0   b)  3   c)  2   d)  1

Given the following code, assume the myQueue object is a queue that can hold integers and that value is an int variable.1   myQueue.enqueue(0);2   myQueue.enqueue(1);3   myQueue.enqueue(2);4   myQueue.dequeue(value);5   Console.WriteLine(value);Assume that the dequeue function, called on line 4, stores the number removed from the queue in the value variable. What will the statement on line 5 display? Question 43 options:   a)  2   b)  0   c)  1   d)  none of these

Create a view, using JOBS, DEPARTMENTS, and JOB_HISTORY tables that will include department name (not ID),  job title (not jobID), start date, and end date for all rows in the JOB_HISTORY table Using your view, write a query that shows the number of rows (count) for each department. Write a query that uses your view from above to select the columns department name, job title, and end date for all rows where the department name includes the string “Sale” that is NOT case-sensitive.  Use a function.  i.e.  SALE, SaLe, Sale, sAle, etc.  should all match a row

1.Assume some Node class with info link fields . Complete this method in class List that returns a reference to the node containing the data item in the argument findThis, Assume that findThis is in the list    public class list  { protected Node head ; Protected int size ; Public Node find (char find this)     {     Node curr = head;        while(curr != null)       {         if(curr.info == findThis)             return curr;         curr = curr.link;       }         return -1;                               } }

Stack: Stacks are a type of container with LIFO (Last In First Out) type of working, where a new element is added at one end and (top) an element is removed from that end only. Your Stack should not be of the fixed sized. It should be able to grow itself. bool empty() : Returns whether the Stack is empty or not. Time Complexity should be: O(1) bool full() : Returns whether the Stack is full or not. Time Complexity should be: O(1)int size() : Returns the current size of the Stack. Time Complexity should be: O(1)Type top () : Returns the last element of the Stack. Time Complexity should be: O(1) void push(Type) : Adds the element of type Type at the top of the stack. Time Complexity    should be: O(1) Type pop() : Deletes the top most element of the stack and returns it. Time Complexity    should be: O(1) Write non-parameterized constructor for the above class. Write Copy constructor for the above class. Write Destructor for the above class. Now write a global function show stack which…

Interval Difference: Please help me with this assertion error