🏷️ LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION →
Log in
Computer Science
3
answers
1
watching
463
views

Your program will take an arithmetic expression as a String input. For Example:

 

  • “1+2*(3/4)”

 

  • “1+2*[3*3+{4–5(6(7/8/9)+10)–11+(12*8)]+14”

 

  • “1+2*[3*3+{4–5(6(7/8/9)+10)}–11+(12*8)/{13+13}]+14”

 

Program

 

Your program will determine whether the open brackets (the square brackets, curly braces and the parentheses) are closed in the correct order.

 

Outputs:

 

Output 1

 

1+2*(3/4)

This expression is correct.

 

Output 2

 

1+2*[3*3+{4–5(6(7/8/9)+10)–11+(12*8)]+14

This expression is NOT correct.

Error at character # 10. ‘{‘- not closed.

 

Output 3

 

1+2*[3*3+{4–5(6(7/8/9)+10)}–11+(12*8)/{13+13}]+14

This expression is correct.

 

Output 4

 

1+2]*[3*3+{4–5(6(7/8/9)+10)–11+(12*8)]+14

This expression is NOT correct.

Error at character # 4. ‘]‘- not opened.

Task 1

Solve the above problem using an array-based stack.

 

Task 2

Solve the above problem using a linked list-based stack.

Watch
3
answers
1
watching
463
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share
Already have an account? Log in
Share
Avatar image
Read by 6 people
Already have an account? Log in
Share

Related questions

  1. Complete the following problem using concepts of STACK.
  2. If you are using JAVA, you must include the main method as well which should test your other methods and print the outputs according to the tasks.
  3. If you are using PYTHON, make sure your code has the methods invoked and proper printing statements according to the tasks.
  4. Your program will take an arithmetic expression as a string input. For Example:

     

    • “1+2*(3/4)”

     

    • “1+2*[3*3+{4–5(6(7/8/9)+10)–11+(12*8)]+14”

     

    • “1+2*[3*3+{4–5(6(7/8/9)+10)}–11+(12*8)/{13+13}]+14”

     

    Program

     

    Your program will determine whether the open brackets (the square brackets, curly braces, and the parentheses) are closed in the correct order.

     

    Outputs:

     

    Output 1

     

    1+2*(3/4)

    This expression is correct.

     

    Output 2

     

    1+2*[3*3+{4–5(6(7/8/9)+10)–11+(12*8)]+14

    This expression is NOT correct.

    Error at character # 10. ‘{‘- not closed.

     

    Output 3

     

    1+2*[3*3+{4–5(6(7/8/9)+10)}–11+(12*8)/{13+13}]+14

    This expression is correct.


    Output 4

     

    1+2]*[3*3+{4–5(6(7/8/9)+10)–11+(12*8)]+14

    This expression is NOT correct.

    Error at character # 4. ‘]‘- not opened.

    Task 1

    Solve the above problem using an array-based stack.

     

    Task 2

    Solve the above problem using a linked list-based stack.

COMP 2021Winter 2010 - Final Examination Pape 11 110 6 . The two classes low compile without me. What is displayed when the main() method of class Nightmareix is executed? Clearly indicate the program output in the appropriate space ca pe You may use the other lank space as a scratch pad to track the state of memesy as the program escoles, but the contents of this other space will not he graded The definition of the Pair claw public cla Pair private int left: private int right publie Pairintit T left- right - public void nix (Pair pl loft - P.left public string toitring) return "IL... lort R right "1" The definition of the NightmareMix class public class Nightmareix public static void mix Inta (int il, int 12) public static void mixArraywithint fint 11 a, int i, int v) 11 - V public static void mixArrayaor Int(int il al, intl a2) public static void mixMatrixWithint fint 11111121 - m int 11, int 12, int v public static void mixMatrix WithArray (int 11 11- , int i, intila) public static void mixlar Addresses Pair pl, Pair 2) pl - p2 public static void mixArrayWithPairState (Pair) a, int i, Pair pl public static void mixArrayWithPairAddress (Pairla, int i, Pair p) ali - P; public static void mixArrayaoraira (Pairil al, Pairil a2) public static void main(Stringil arga) int myV1 - 1; int myV2 - 2; int my = (3, 4) int my2 = 5, 6) into myM1 , 8 9, 10}} Pair myP1 = new Pair (11, 12) Pair myP2 = new Pair (13, 14) Pair myPA (neu Pair (15, 16), new pair(17, 18) Pair myPA2 = (neu Pair (19, 20), new pair (21, 22) mixInita (myvi, myV2); mixArrayWith Int (myal, 0, myv2); mixArraysOfIntinyal, myA2); MixMatrixWithint (myM, 0, 0, myV2); mixArrayaofTnt (HyMIO, myM[1); mixMatrixWithArray (wy, , WyA2); mixArraywithint nyA2, 0, myV2); mixPair Addresses (wypi, myP2); RixPairAddren (HyPALIO), WPAI[1]); mixArraywithPairstate (myPA2, 0, 1); mixArraywithPairAddresa (myPA2, 1, WP2); mixArray Paira (wyPal, myPAZ) System.out.println("1.. myvi) System.out.println("2: ( +WA110 A11] + " ") System.out.println("3: ( + myA2[0] + + m 2 (1) + " ); System.out.println("4: ( myM[0][0] + "," myM[0][1] + " myM[1][0] + " " + myM[1][1] + "} ") System.out.println('5: ( + myPA10) + myPA [1] + " "); System.out.println("6: ( myPA2[0 PA21] + " ); 1"

  1. Given the following main program

    #main
    a = [5,2,9,6,3] doubleList(a) print a

    Implement the function named doubleList that takes one list argument and modifies the list so that each element in the list is doubled. The statement print(a) in the main program will then have to print [10,4,18,12,6]

  2. Given the following main program

    #main
    a = [5,2,9,6,3]
    b = reversedList(a) print b
    print a

    Implement the function named reversedList that takes one list argument and returns a list that contains the elements in the list argument in reverse order. The statement print(b) in the main program will then have to print [3,6,9,2,5]. The statement print(a) must print the original list [5,2,9,6,3] unaffected. This means your function should not modify the list argument.

  3. Given the following main program

    #main
    a = [5,2,9,6,3] reverseList(a) print a

    Implement the function named reverseList that takes one list argument and reverses the list so that the modified list contains the same elements in reverse order. The statement print(a) in the main program will then have to print [3,6,9,2,5]

  4. What is the return value of the functions doubleList, reversedList and reverseList in questions 1, 2, and 3 above?

  1. Given the following main program

    #main
    a = [5,2,9,6,3]
    b = evenElements(a) print b

    Implement the function named evenElements that takes one list argument and returns a list that contains the elements in the list argument that are even integers. The statement print(b) in the main program will then have to print [2,6]. What is the return value of the function? Your function should not modify the list argument.

  2. Given the following main program

    #main
    a = [5, 2, 9, 6, 3, 7, 19, 4, 8, 17, 21, 20, 15] removeOddElements(a)
    print a

    Implement the function named removeOddElements that takes one list argument and modifies the list so that all odd integers in the list are removed. The statement print(a) in the main program will then have to print [2,6,4,8,20]. What is the return value of the function?

  3. Part A
    #Main program A=[5,8,2,0,-5,3] n=-5
    answer = isFound(A, n) if answer == True:

    print "The integer is found in the list" else:

    print "The integer is not found in the list."

    Consider the main program shown above. Write a Python function named isFound that takes a list of integers and an integer as arguments and returns True if the integer is found in the list; otherwise it returns False.

    Remark: You are NOT allowed to use the in operator or any other built in function when you write this function. Instead, you must write a loop to go through the elements of the list.

    Part B

    Give the following main program

page2image58001280 page2image58001664

#main
A = [5,2,9,6,3]
B = [2,4,3,9,7,1,6,5]
flag = isList1InList2(A, B) if flag:

print "The list", A, "is contained in the list", B else:

print "The list", A, "is not contained in the list", B

Implement the function named isList1InList2 that takes two list arguments and returns True if and only if each element of the first list argument are found in the second list argument; otherwise it returns False.

Remark: You are NOT allowed to use the in operator or any other built in function when you write this function. Instead, if you wish, you can use the function you wrote in Part A.

For the lists shown in the main program, your function must return True because each element of list A is found in list B.

  1. A given List is known as Palindrome List if the reverse of the List contains the same elements in the same order of the original List. For example the List of integers [2, 5, 0, 3, 3, 0, 5, 2] is a Palindrome because the reverse of the List which is [2, 5, 0, 3, 3, 0, 5, 2] contains the same elements in the same order as the given List. However the List [1, 2, '2', 1] is not Palindrome because its reverse which is [1, '2', 2, 1] does not contain the same elements in the same order as the given List.

    Write a Python function named isPalindrome that takes a List as argument and returns True if the argument is a Palindrome List; otherwise it returns False. You don't need to write the main program; just write the function. If you would like to test your function, then it is ok to write the main program too but you will not get any mark for the main program.

  2. Given your function in question #7 above, what is the output of the following code: a=[]

    b = [5,2,9,6,3]

    print isList1InList2(a,b)

  3. Given your function in question #7 above, what is the output of the following code:

    a=[]
    b=[]
    print isList1InList2(a,b)

  4. Given your function in question #7 above, what is the output of the following code: a = [5,2,9,6,3]

    b=[]

print isList1InList2(a,b)

  1. Given the following main program

    #main
    a=[]
    n = readListElements(a)
    print "The user entered", n, "elements to the list" print a

    Implement the function named readListElements that takes one list argument and modifies the list by repeatedly asking the user to enter integer values and then appending them to the list. The process stops when the user enters -1000. The stopping value -1000 should not be appended to the list. Moreover your function must count the appended elements and return it. Example if the user enters the integers 31, -4, 9, 1,-1000 then your function must modify the list a to a = [31, -4, 9, 1] and return the number elements added which is 4.

  2. Write a function named createRandomList that takes an integer argument n and returns a list with n elements. The elements must be random numbers in the range [0,100]

  3. Given the following main program:

    #main

       n = int(input("How many elements do you want in your list? "))
   a = createList(n)
   s1 = sumOfElementsAtEvenIndexes(a)
   print s1

       s2 = sumOfElementsAtOddIndexes(a)
   print s2
   s3 = sumOfAllElements1(a)
   print s3

       s4 = sumOfEvenElements(a)
   print s4
   s5 = sumOfOddElements(a)
   print s5

       s6 = sumOfAllElements2(a)
   print s6
   if (s3 != s6):

             print "Something is wrong in your program."
   else:

             print "Looks like you have done a good job."

    Implement the functions as follows:

  •  createList: returns a list object with n elements. The elements are generated randomly so that each element is in the range [15,45]

  • sumOfElementsAtEvenIndexes: returns the sum of the elements at even indexes. Use a for loop or a while loop.

  • sumOfElementsAtOddIndexes: returns the sum of the elements at odd indexes. Use a for loop or a while loop.

  • sumOfAllElements_A: returns the sum of all the elements in the list using the functionssumOfElementsAtEvenIndexes and sumOfElementsAtOddIndexes. Here you are NOT allowed to use any loop; instead make function calls as described.

  • sumOfEvenElements: returns the sum of the even integer elements in the list. Use a for loop or a while loop.

  • sumOfOddElements: returns the sum of the odd integer elements in the list. Use a for loop or a while loop.

  • sumOfAllElementsB: returns the sum of all the elements in the list using the functions sumOfEvenElements and sumOfOddElements. Here you are NOT allowed to use any loop; instead make function calls as described.

17. Most data compression algorithms like winzip, gzip, lzip and etc are based on the frequency distribution of characters in a given string. Write a function named getFreqDistribution that takes a string argument and returns a LIST that has length 26 such that the first element of the list is the number of appearance of 'a' or 'A' in the string, the second element is number of appearance of 'b' or 'B', and so on so forth.

I'm studying python 2 and have a lot of troubles with solving these homework questions.

Weekly leaderboard

Home
Homework Help 3,900,000
Computer Science 2,000
Start filling in the gaps now
Log in