Computer Science

Question

1. Write a program that reads an integer from the user. Then your program should display a message indicating whether the integer is even or odd.

2. A string is a palindrome if it is identical forward and backward. For example “anna”,“civic”,“level” and “hannah” are all examples of palindromic words. Write a program that reads a string from the user and uses a loop to determines whether or not it is a palindrome.

3. Write a program that reads integers from the user and stores them in a list. Your program should continue reading values until the user enters 0. Then it should display all of the values entered by the user (except for the 0) in order from smallest to largest with one value appearing on each line.

4. Two words are anagrams if they contain all of the same letters, but in a different order. For example, “evil” and “live” are anagrams because each contains one ‘e’, one ‘i’, one ‘l’, and one ‘v’. Create a program that reads two strings from the user, determines whether or not they are anagrams.

5. Write a function that takes three numbers as parameters, and returns the median value of those parameters as its result.

Answer 1

"""

Problem #1

Determining if the integer that is input

is an Even or odd integer

"""

#############################################

x = input("Please input the integer value :>")

if int(x)%2==0:

print(str(x) + " is even")

else:

print(str(x) + " is odd ")

"""

Problem #2 : determining if the string is or is not

a palindrome

"""

#############################################

str = input("Please input the string :>")

n = len(str)

iLeftIndexPos=0

iRightIndexPos=n-1

isPalindrome=True

while (iLeftIndexPos<iRightIndexPos):

if (str[iLeftIndexPos]!=str[iRightIndexPos]):

isPalindrome=False

break;

else:

iLeftIndexPos = iLeftIndexPos+1

iRightIndexPos = iRightIndexPos-1

outbuff = str + " is "

if isPalindrome==False:

outbuff = outbuff + "NOT "

outbuff = outbuff + " a palindrome. "

print(outbuff)

"""

Problem #3: Bubble Sort; Sorts a list of integer

values input by the user; ZER0 is used as the sentinel

#################################################

def Sort(sub_li):

l = len(sub_li)

for i in range(0, l):

for j in range(0, l-i-1):

if (int(sub_li[j]) > int(sub_li[j + 1])):

tempo = sub_li[j]

sub_li[j]= sub_li[j + 1]

sub_li[j + 1]= tempo

return sub_li

iNums = []

x=-1

while int(x)!=0:

x = input("Please input the integer value or ZER0 to quit :>")

if int(x)!=0:

iNums.append(x)

Sort(iNums)

print(iNums)

###########################

# Problem 4:Anagrams

###########################

def Sort(sub_li):

l = len(sub_li)

for i in range(0, l):

for j in range(0, l-i-1):

if (sub_li[j] > sub_li[j + 1]):

tempo = sub_li[j]

sub_li[j]= sub_li[j + 1]

sub_li[j + 1]= tempo

return sub_li

#################################################

def Str2CharList(str):

charListReturn = []

n = len(str)

for i in range(n):

charListReturn.append(str[i])

return(charListReturn)

#####################################

str1 = input("Please input the first string :>")

str2 = input("Please input the 2nd string :>")

n = len(str1)

if (n==len(str2)):

charList1 = Str2CharList(str1)

charList2 = Str2CharList(str2)

sortedStr1 = Sort(charList1)

sortedStr2 = Sort(charList2)

isAnagram=True

for i in range(n):

if (charList1[i]!=charList2[i]):

isAnagram=False

break

if isAnagram:

print(" they are anagrams ")

else:

print(" not anagrams")

else:

print(" not anagrams ")

#####################################

# Median of Three

################################

def MedianOfThree(x,y,z):

temp=0

if (x>y):

t=x

x=y

y=t

if (y>z):

t=y

y=z

z=t

if (x>y):

t=x

x=y

y=t

return y

#######################################

print(MedianOfThree(16,10,12))