Show the state of the stack and the output as the following equation is converted from infix to postfix using the standard stack algorithm. d* (q+p) /h Notes: • The Stack and Output columns show the state of the stack and the output string after the symbol in that row has been processed. • All symbols are only one character so you don't need to include any spaces. The stack fills from the right, ie, the rightmost item in the stack is the top item. • The last row should contain nothing in the Symbol and Stack columns, that is, it should just contain the final output. • Empty rows will be ignored. Answer: Symbol Stack Output
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- 4. Sort elements in an array-based stack in ascending order, i.e. make the smallest element to be the top element of the stack. E.g. given the stack elements (from bottom to top): 90, 70, 80, 10, sort the elements to make the stack elements become (from bottom to top): 90, 80, 70, 10. The only data structure you can use is array-based stack. In addition to the given stack, you can use only one extra stack to store some temporary data. Given a stack st, use one extra stack, tmpst, to store temporary data. Here are some hints of the idea. Pop out the top element of st to a variable tmp. If the stack tmpst is empty, push tmp onto tmpst; if tmpst is not empty, pop out its top element and push that element onto st until the top element of tmpst is smaller than tmp, then push tmp onto tmpst .. a. Write a program to implement the stack based sorting. b. Take the input (90, 70, 80, 10) as an example. c. Print all the push and pop operations in proper format. d. At the end, print the sorted…Represents an integer evaluator of postfix expressions. Assumes the operands are constants. Evaluates the specified postfix expression. If an operand is encountered, it is pushed onto the stack. If an operator is encountered, two operands are popped, the operation is evaluated, and the result is pushed onto the stack. param expr string representation of a postfix expression return value of the given expression use java to codeComplete the following ():a. A stack is used by the system when a function call is madeb. A stack can become full during program execution
- OCaml Code: I need help with writing the push and pop statements in order to create an interpreter for OCaml. I need help with writing the print statement as well. The println command pops a string off the top of the stack and writes it, followed by a newline, to the output file that is specified as the second argument to the interpreter function. In the case that the top element on the stack is not a string, it should be returned to the stack and an :error: pushed. If the stack is empty, an :error: shall be pushed. Below is the unfinished code. Make sure to use the test cases as well and show the screenshots of the code passing the test cases. Attached is info. for push and pop. interpreter.ml type stackValue = BOOL of bool | INT of int | ERROR | STRING of string | NAME of string | UNIT type command = ADD | SUB | MUL | DIV | PUSH of stackValue | POP of stackValue | REM | NEG | TOSTRING | SWAP | PRINTLN | QUIT let interpreter (input, output) = let ic = open_in input in…The objective of this assignment is to write an algorithm that convert a postfix expression into infix using a Stuck ADT. Display how the algorithm performs by showing the state of the stack while converting the following expression: ab/c*de*-* Evaluates the specified postfix expression. If an operand is * encountered, it is pushed onto the stack. If an operator is * encountered, two operands are popped, the operation is * evaluated, and the result is pushed onto the stack. * @param expr string representation of a postfix expression * @return value of the given expression
- First picture: create a complete programming codes about the picture. Use pre-defined for stack. Sencond Picture: Test results or the supposed outcome of the programming. Note: put a comment in every line to describe what is the function of each specific codes, variables, etc.question 1 Write a program to evaluate a postfix expression. Input: a postfix expression. E.g. 3 5 + Output: the result of the expression. E.g. the result for the above input is 8. Note: You must use the stack to implement this task. And please give the stack solutions for both the following implementations: Implement the array-based stack Implement the pointer-based stack Test your program using the following expressions: 3 5 + 3 5 + 6 * 3 5 6 + * 3 5 6 * 8 - 2 / + 12 20 + 16 / do not copy from chegg and do in c++See how the stack behaves when left alone.
- Question 3 Not complete Marked out of 1.00 Flag question Evaluate the postfix expression 2 3 5 -* using a stack structure. The algorithm is as follows: • Read the next token from left to right • If the token is an operand, push it onto the stack • If the token is an operator, pop the top two operands from the stack, perform the operation, and push the result back onto the stack • Repeat until there are no more tokens to read Note: • Show the contents of the stack AFTER each "push" operation. • Insert a comma between numbers in the answer box below: Answer: (penalty regime: 0 %) step 1: [ step 2: step 3: [ step 4: [ step 5: CheckQ1- Write a program to insert five elements in the stack and print the top element using top() and print the size of the stack and check if the stack is empty or not.Try a spatuladef pancake_scramble(text):Analogous to flipping a stack of pancakes by sticking a spatula inside the stack and flipping over the stack of pancakes resting on top of that spatula, a pancake flip of order k performed for the text string reverses the prefix of first k characters and keeps the rest of the string as it were. For example, the pancake flip of order 2 performed on the string 'ilkka' would produce the string 'likka'. The pancake flip of order 3 performed on the same string would produce 'klika'.A pancake scramble, as defined in the excellent Wolfram Challenges programming problems site, consists of the sequence of pancake flips of order 2, 3, ... , n performed in this exact sequence for the given n-character text string. For example, the pancake scramble done to the string 'ilkka' would step through the intermediate results 'likka', 'kilka', 'klika' and 'akilk'. This function should compute and return the pancake scramble of its parameter text string. text…