Alaaddin74/MohlerASAG huggingface dataset:
Question: How can you implement a stack with a list?
Instructor answer: Keep the top of the stack pointing to the head of the linked list, so the push and pop operations will add or remove elements at the beginning of the list.

Student answer: Create a new list. <br>Pop elements in the stack as needed. <br>Push the stack to remove items, unless the stack is empty.<br><br>The top item is at the head of the list.<br>The last item is at the end.
Grade (0-5): 4.5

Student answer: adding the element to the end of the list so that it links to the element before it. when popping the element it takes the last element in the list and sets the previous one as the end of the list.
Grade (0-5): 3.5

Student answer: You can implement a stack using arrays or and linked list. By the use of pointers, that point element(node) to the next element in the stack. By the use of pointers, the stack becomes a linked list.
Grade (0-5): 2.5

Student answer: Elements are only inserted and removed from the head of the list.  There is no header node or current pointer.
Grade (0-5): 4.5

Student answer: use a linked list and keep track of a pointer that points to the first item
Grade (0-5): 4

Student answer: A singly linked list can already be easily used for LIFO data storage. Members of a stack can simply be pushed and popped from a list, the first item in will be the last out.
Grade (0-5): 4.5

Student answer: using pointer
Grade (0-5): 1.5

Student answer: the top is the first pointer.
Grade (0-5): 3

Student answer: Keep a pointer pointing to the last element entered at the front of<br> the array and move the pointer "back" when you delete an element.
Grade (0-5): 2.5

Student answer: using linked list, you are pushing the node that contains each int to the stack until you get to the end of your linked list
Grade (0-5): 2.5

Student answer: have a linked list, and for each push, add an item onto beginning of the list, and for each pop remove the first element in the list.
Grade (0-5): 5

Student answer: Using a linked list is one way to implement a stack so that it can handle essentially any number of elements. It is usually convenient to put a data structure in its own module, thus, you'll want to create files stack.h and a stack.c
Grade (0-5): 2
Question: How are infix expressions evaluated by computers?
Instructor answer: First, they are converted into postfix form, followed by an evaluation of the postfix expression.

Student answer: They are converted to post fix expressions.  It still follow the order of precedence for the operators.
Grade (0-5): 5

Student answer: They are first converted to postfix expressions and then evaluated.
Grade (0-5): 5

Student answer: Computers cannot evaulate infix expressions, it must first convert infix to postfix expression then it can evaluate.
Grade (0-5): 5

Student answer: By using parentheses to have order in the expression.
Grade (0-5): 2.5

Student answer: In postfix notation.
Grade (0-5): 4

Student answer: computers usually convert infix expressions to post fix expression and evaluate them using a stack.
Grade (0-5): 5

Student answer: they are converted to postfix
Grade (0-5): 5

Student answer: Infix expressions are interpreted as postfix expressions by implementing stacks.
Grade (0-5): 5

Student answer: They are first converted into an equivalent postfix expression so it can be read by the computer.
Grade (0-5): 5

Student answer: The computer translates the infix expression to a postfix expression, then solves.
Grade (0-5): 5

Student answer: in postfix format
Grade (0-5): 4

Student answer: they use parenthisis and a stack to determine which evaluations need to be made first
Grade (0-5): 3

Student answer: By throwing variables into a postfix expression and operands onto a parentheses regulated stack until end parentheses and enough variables to operate on are encountered.
Grade (0-5): 4.5

Student answer: by being passed to the function by a leading term
Grade (0-5): 1.5

Student answer: i have an hard time explaining this so i'll show how infix is evaluated instead.<br>Start with an infix expression, like, <br>(((5+2)*5)+(400/(2+3))), and  push items until you get a ")" and once that happens, perform the operations until you reach an "("... with that complete, you will now have <br>((7*5)+(400/(2+3))) as now the expression that will be evaluated... perform last step again...<br>(35+(400/(2+3))) is now the stack.... repeat agian...<br>(35+(400/5)) is now the stack after that.... repeat...<br>(35+80) is now the stack, repeat again...<br>115 is now the stack, and is returned.
Grade (0-5): 2.5

Student answer: The infix expression is converted to postfix form<br>
Grade (0-5): 5

Student answer: by converting them to postfix expressions and putting the operations in a stack
Grade (0-5): 5

Student answer: The computer converts the infix expression to postfix form. Then evaluates the postfix expression.
Grade (0-5): 5

Student answer: infix expressions are converted to postfix expressions before they can be evaluated by a computer.  Operands stay in the same order.  Operators always follow the operands.
Grade (0-5): 5

Student answer: infix expressions are pointers evaluated by reference to the memory location
Grade (0-5): 1.5

Student answer: computers convert infix expressions to postfix form before evaluation
Grade (0-5): 5
Question: How are infix expressions evaluated by computers?
Instructor answer: First, they are converted into postfix form, followed by an evaluation of the postfix expression.

Student answer: convert infix expressions to postfix expression and evaluate the postfix expression
Grade (0-5): 5

Student answer: When an operand is entered, the computer<br>Pushes it onto a stack<br>When an operator is entered, the computer<br>Applies it to the top two operands of the stack<br>Pops the operands from the stack<br>Pushes the result of the operation onto the stack
Grade (0-5): 4

Student answer: Computers convert an infix expression into a postfix expression. They then push the numbers onto a stack and pop them out as they are needed.
Grade (0-5): 5

Student answer: infix expressions are converted to postfix, (i.e. 3+2 is changed to 32+)
Grade (0-5): 5

Student answer: they are transformed into post-fix expressions, then evaluated with a stack.
Grade (0-5): 5

Student answer: Writing arithmetic expressions is called infix notation.  This is because a binary operator (like '+') is written in between its two operands (as in "a + b").  There are two alternative forms of notation used in certain situations.  One is prefix notation, in which an operator is written before its operands.  In prefix notation, the sum of a and b is written "+ a b".  This is the notation used to write function calls in mathematics and computer science.  It is also used in the Lisp and Scheme programming languages.  In postfix notation, an operator is written after its operands.  The sum of a and b is written "a b +".  (You may have seen this as "reverse Polish notation".)  Postfix notation forms the conceptual basis for the way that arithmetic expressions are evaluated by a computer.  One important characteristic of both postfix and prefix notations is that they are unambiguous; no parentheses are needed to indicate the order of operations.<br>
Grade (0-5): 5
Question: What operations would you need to perform to find a given element on a stack?
Instructor answer: Pop all the elements and store them on another stack until the element is found, then push back all the elements on the original stack.

Student answer: isEmptry()//determines if the stack is full or not<br>pop()//to remove the top element if it is not the on you are looking for<br>search()//you compare each element of the stack to the data you are looking for.
Grade (0-5): 3

Student answer: You would have to keep using peek or getTop to see what the top element is then popping the top element until peek or getTop provides the element you are looking for.
Grade (0-5): 3

Student answer: Push adds a given node to the top of the stack leaving previous nodes below. Pop removes and returns the current top node of the stack.
Grade (0-5): 3

Student answer: Using linked lists and stacks, you would need a temp stack to retain the values. Then you would use the Pop( ) function to pop off each element and then compare it. If its not the element your looking for, Push ( ) it to the temp stack. Repeat until the element is found. When you find it,  Pop ( ) off the temp stack back onto the regular stack to have a complete stack again.
Grade (0-5): 5

Student answer: Pop each item off the top until you find what you are looking for. If the stack ends up empty and you never found the item, then it does not exist in the stack. It may also be necessary to save the popped values in case you want to recreate the stack.
Grade (0-5): 5

Student answer: if the stack is implemented using an array you could simply search the array for the item. If the stack is implemented using a linked list you would have to pop the values off of the stack until either the value is found or the stack is empty, you would then have to have the items put back into the list.
Grade (0-5): 4.5

Student answer: You need to pop each item on the stack and compare the item.  Once the item is found, no more items need to be removed.
Grade (0-5): 3.5

Student answer: Pop an element from one stack, check to see if it is the desired element, if not push it onto another stack. When finished, pop the items from the second stack and push them back onto the first stack (this will ensure the order of the elements is maintained).
Grade (0-5): 5

Student answer: Basically pop the stack until you find the given element.
Grade (0-5): 3.5

Student answer: Iterate through the stack, checking the number against the current element.
Grade (0-5): 1.5

Student answer: pop and push
Grade (0-5): 3

Student answer: pop all elements off stack until you find that element and then push the popped elements back on the stack
Grade (0-5): 5

Student answer: Keep popping nodes and storing them in an alternate stack until the given element is found, then pop the given element and push the previously popped nodes back onto the stack.
Grade (0-5): 5

Student answer: either traverse the entire list and pop the given part or create a pointer system that automatically points to it.
Grade (0-5): 3
Question: What operations would you need to perform to find a given element on a stack?
Instructor answer: Pop all the elements and store them on another stack until the element is found, then push back all the elements on the original stack.

Student answer: Depends on the type of stack, on a true stack you will haft to pop all of the elements of the stack until you find the element you want, and then after that you will need to push all the elements that where removed back in to the stack in the order that they where removed.<br><br>With a Java style stack, where there is a peek function, it will return the element you wanted instead of requiring you to perform all the excessive actions that are required from a true stack.
Grade (0-5): 5

Student answer: if top item != given element<br>pop the stack.<br>Repeat until item is found or stack is empty
Grade (0-5): 3.5

Student answer: could traverse through the list/array to find the element.
Grade (0-5): 2

Student answer: you need the pop opertation to go throught the stack and find the element.
Grade (0-5): 3.5

Student answer: createStack, push, isEmpty, pop, and a boolean return value.
Grade (0-5): 3

Student answer: you would have to traverse the stack popping each element to search it
Grade (0-5): 3.5

Student answer: Pop each element off the stack (and into another stack for storage) until the desired element is found.
Grade (0-5): 4

Student answer: pop operation
Grade (0-5): 2.5

Student answer: to pop elements then push them back
Grade (0-5): 4.5

Student answer: A function to keep track of the elements popped and a function to put<br> the popped elements backinto the function.
Grade (0-5): 4.5

Student answer: you would pop each element and compare it to what you are looking for and then push it back on the stack so that it is not lost
Grade (0-5): 4.5

Student answer: you would need to perform a search through the list of elements (i dont really understand what this question is asking....its not very clear?)
Grade (0-5): 1.5

Student answer: StackPush()<br>StackPop()<br>StackIsEmpty()
Grade (0-5): 3
Question: What is a queue?
Instructor answer: A data structure that can store elements, which has the property that the last item added will be the last to be removed (or first-in-first-out).

Student answer: A data structure in c++ which is a collection of data that is kept in order.  First in first out.
Grade (0-5): 5

Student answer: a queue is a list of objects in a particular order that is read one at a time starting at the first followed by the second and so on.
Grade (0-5): 4

Student answer: A queue is an abstract data structure in which operations are performed at both ends giving the queue first in first out behavior.
Grade (0-5): 5

Student answer: A queue stores a set of elements in a particular order.  Its principle of operation is FIFO(first in first out), which means the first element inserted is the first one to be removed.
Grade (0-5): 5

Student answer: An ADT whose first inserted item is the first item removed. This uses the FIFO idea where items enter a queue at its back and leave at its front.
Grade (0-5): 5

Student answer: Last in, last out architecture. It works the same way a line at the bank would work, the person that's been waiting the longest gets served first.
Grade (0-5): 5

Student answer: a queue is a data structure that stores elements in a First in First out order.
Grade (0-5): 5

Student answer: A waiting list of items that operation in a FIFO (first in first out) order.
Grade (0-5): 5

Student answer: A queue is similar to an array, except that the data can only be accessed sequentially rather than at random. Unlike a stack, a queue follows FIFO. First in, First out.
Grade (0-5): 5

Student answer: is a particular kind of collection in which the entities in the collection are kept in order and the principal (or only) operations on the collection are the addition of entities to the rear terminal position and removal of entities from the front terminal position. First in First Out (FIFO Method).
Grade (0-5): 5

Student answer: Like a linked list but first in first out
Grade (0-5): 4.5

Student answer: A queue is a FIFO data structure.
Grade (0-5): 5

Student answer: A queue is a first in first out data structure.
Grade (0-5): 5

Student answer: Its like a stack, but uses the linked list to stack a little differently. It's FIFO so the first thing enqueued is the first thing dequeued
Grade (0-5): 5

Student answer: A first in, first out Abstract Data type that can be used to store values.
Grade (0-5): 5

Student answer: Stores a set of elements in a particular order<br>with a First In, First Out principle
Grade (0-5): 5

Student answer: object that stores elements in order that follows first in first out.  the first element added is the first one to come off.
Grade (0-5): 5

Student answer: A quese is an list that stores a set of elements in a particular order. It has Stack principle, but in this case, its "First In, First Out". The first element inserted is the first element to be removed.
Grade (0-5): 5

Student answer: a finite ordered list with zero or more elements, based upon First In First Out
Grade (0-5): 5
Question: What is a queue?
Instructor answer: A data structure that can store elements, which has the property that the last item added will be the last to be removed (or first-in-first-out).

Student answer: a data structure that performs operations in the order of first in first out FIFO
Grade (0-5): 5

Student answer: A Queue is a "first in first out" data structure, such that the first element added is also the first removed.
Grade (0-5): 5

Student answer: Queue is a buffer, which store element in a particular order
Grade (0-5): 3.5

Student answer: stores a set of elements where the first element in, is the first element to be removed
Grade (0-5): 5

Student answer: A data structure that removes nodes from the head and adds nodes at the tail.
Grade (0-5): 5

Student answer: a queue is a list of things that follows the first in first out behavior
Grade (0-5): 5

Student answer: a queue is a storage container that holds its objects in a first in, first out priority
Grade (0-5): 5

Student answer: The queue is another data structure. A physical analogy for a queue is a line at a bank. When you go to the bank, customers go to the rear (end) of the line and customers come off of the line (i.e., are serviced) from the front of the line.
Grade (0-5): 5
Question: What are the two main functions defined by a queue?
Instructor answer: enqueue and dequeue

Student answer: enqueue which adds data to the queue and dequeue which deletes data from the queue
Grade (0-5): 5

Student answer: enqueue , which inserts a specified element at the head of the specified queue, and dequeue , which removes the specified element from the queue.
Grade (0-5): 5

Student answer: The two main functions are enqueue which inserts an item at the back of the queue and dequeue which removes an item from the front of the queue.
Grade (0-5): 5

Student answer: The two main functions are enqueue and dequeue.
Grade (0-5): 5

Student answer: Enqueue and Dequeue
Grade (0-5): 5

Student answer: Enqueue and Dequeue
Grade (0-5): 5

Student answer: enqueue - insert into queue<br>dequeue - remove element
Grade (0-5): 5

Student answer: Remove the item added first, add items to the back.
Grade (0-5): 5

Student answer: The two main functions of a queue are enqueue and dequeue.
Grade (0-5): 5

Student answer: enqueue and dequeue.
Grade (0-5): 5

Student answer: enqueue and dequeue
Grade (0-5): 5

Student answer: Enqueue and Dequeue
Grade (0-5): 5

Student answer: enqueue and dequeue
Grade (0-5): 5

Student answer: enqueue and dequeue
Grade (0-5): 5

Student answer: enque ( Data ),  Deque ( )
Grade (0-5): 5

Student answer: enqueue and dequeue
Grade (0-5): 5

Student answer: enqueue and dequeue
Grade (0-5): 5

Student answer: The two functions are, Enqueue and Dequeue
Grade (0-5): 5

Student answer: enqueue, dequeue
Grade (0-5): 5

Student answer: enqueue, that adds an item to the queue<br>dequeue, that takes the first item out of the queue
Grade (0-5): 5

Student answer: Enqueue and dequeue, which add and remove elements from the queue
Grade (0-5): 5

Student answer: Enqueue and Dequeue
Grade (0-5): 5

Student answer: dequeue and enqueue
Grade (0-5): 5

Student answer: enqueue and dequeue
Grade (0-5): 5

Student answer: enqueue and dequeue
Grade (0-5): 5

Student answer: enqueue<br>dequeue
Grade (0-5): 5

Student answer: rear and front
Grade (0-5): 2.5
Question: How can you implement a queue with an array?
Instructor answer: Use a circular array. Keep the rear of the queue toward the end of the array, and the front toward the beginning, and allow the rear pointer to wrap around.

Student answer: Make use of a front pointer and a tail pointer.  When the tail pointer reaches the end of an array it gets reset to the front of the array.  If the two pointers are equal then the queue is either full or just has one element.
Grade (0-5): 4.5

Student answer: you create an array with the max size of your queue and adjust the items to make them follow FIFO procedure.
Grade (0-5): 3

Student answer: By implementing an array and only adding items to the end of the array and only removing items from the beginning of the array.
Grade (0-5): 3

Student answer: For applications in which a fixed-sized queue does not present a problem, you can use an array to represent a queue.
Grade (0-5): 2.5

Student answer: Keep track of the front and the back of the array as you increase and decrease the elements inside the array.
Grade (0-5): 4

Student answer: Declare the size of an array, and have special conditional statements (pointers) to make sure you re-use ALL of the array. Say, you have an array of 20 elements, you load up 18, then dequeue 3, when you enqueue 4 more elements, you want to loop back to index 0 and continue from there... this process saves resources.
Grade (0-5): 4.5

Student answer: you could use the first element of the list as the remove point and insert at the end f you do this you would have to shift the elements down each time you remove an item unless you make the array circular.
Grade (0-5): 4

Student answer: Utilizing indexes for the front and the back.  Front is 0 and as you add items the back index is incremented.
Grade (0-5): 4

Student answer: Declare two variables, “front” and “rear”, to be used to denote which elements in the array can be accessed. Increment “rear” whenever data is enqueued to the end and increment “front” whenever data is dequeued.
Grade (0-5): 4.5

Student answer: It is an array of fixed size. A queue of maximum N elements.
Grade (0-5): 2.5

Student answer: make an array of a size, and add on to the front and delete from the back, keep track of the two so that you know when it is full and where to add or subtract from
Grade (0-5): 4

Student answer: By using the beginning of the array as the removal point of the queue (or beginning of the queue) and the ith element as the end of the queue.
Grade (0-5): 3.5

Student answer: add in data from the first element to the last, take out data from the first element to the last.
Grade (0-5): 3

Student answer: you can take the array and put it in a queue stack or you can just traverse the list and keep track of top and bottom
Grade (0-5): 3.5

Student answer: create a fixed array size, with with 2 integers to point to the beginning and the end of the que, and special cases to know when the que is empty or full.
Grade (0-5): 4

Student answer: Keep track of the front and rear indexes. Either:<br>1)Dequeue items by shifting the array left<br>2)Use wrapped configuration
Grade (0-5): 4
Question: How can you implement a queue with an array?
Instructor answer: Use a circular array. Keep the rear of the queue toward the end of the array, and the front toward the beginning, and allow the rear pointer to wrap around.

Student answer: add items into a fixed size array, pull the items out by calling on them with the starting index, increase starting index so when it calls again its now the next index element in the array.
Grade (0-5): 3.5

Student answer: To use and array to implement a Queue, element or item 0, should be the top element in the array. Every time an element is inserted, all the items in the array are pushed back one space. The top element is always removed first.
Grade (0-5): 3

Student answer: fixed size array with max N elements.  Need to keep track of front and rear of array.
Grade (0-5): 4

Student answer: by keeping track of a front item and a rear item, or with a circular array that uses the modulo function
Grade (0-5): 5

Student answer: Using an array for a queue, the size of the array allocated limits the size of the queue. An array based queue class must keep track of both the front and back of the queue, which may need to wrap around the array.
Grade (0-5): 5

Student answer: A pointer based implementation of a queue could use a linear linked list with two external pointers, one to the front and one to the back
Grade (0-5): 2

Student answer: remove the element then shift the elements one space back
Grade (0-5): 3

Student answer: By having the head pointer point to the first or least current data entered and having the tail point to the most current data entered. A method must be created so that the tail pointer doesn't leave the array.
Grade (0-5): 5

Student answer: an array is a type of queue with a fixed length
Grade (0-5): 1.5

Student answer: your storage class has an array, and you keep track of the index of the first and last item in the array, and wrap around when end of the array is full
Grade (0-5): 5

Student answer: Boolean isFullQ(queue) ::= rear == MAX_QUEUE_SIZE-1
Grade (0-5): 5