Write a function called has_duplicates that takes a string parameter and returns True if the string has any repeated characters. Otherwise, it should return False.

Implement has_duplicates by creating a histogram using the histogram function above. Do not use any of the implementations of has_duplicates that are given in your textbook. Instead, your implementation should use the counts in the histogram to decide if there are any duplicates.

Write a loop over the strings in the provided test_dups list. Print each string in the list and whether or not it has any duplicates based on the return value of has_duplicates for that string. For example, the output for "aaa" and "abc" would be the following.

aaa has duplicates
abc has no duplicates

Print a line like one of the above for each of the strings in test_dups.

The objective here is to write a code in python with a function called has_duplicates that takes a string parameter and returns True if the string has any repeated characters. Otherwise, it should return False.

SEE BELOW FOR THE CODE.

alphabet = "abcdefghijklmnopqrstuvwxyz"

test_dups = ["zzz","dog","bookkeeper","subdermatoglyphic","subdermatoglyphics"]

test_miss = ["zzz","subdermatoglyphic","the quick brown fox jumps over the lazy dog"]

def histogram(s):

d = dict()

for c in s:

if c not in d:

d[c]=1

else:

d[c] += 1

return d

def has_duplicates():

for string in test_dups:

dictionary=histogram(string)

duplicates=False

for ch in dictionary.keys():

if dictionary[ch] > 1:

duplicates=True

break

if duplicates==True:

print(string,"has duplicates")

else:

print(string,"has no duplicates")

def missing_letters(string):

answer=""

for ch in alphabet:

if ch not in string:

answer=answer+ch

return answer

print("__________________________________________")

print(" Calling has_duplicates() function")

print("__________________________________________")

has_duplicates()

print("\n______________________________________________")

print("Calling missing_letters() function in for loop")

print("______________________________________________")

for i in test_miss:

answer=missing_letters(i)

if len(answer)>=1:

print(i,"is missing letters",answer)

else:

print(i,"uses all the letters")

MrRoyal MrRoyal · Answer 2 · 2022-01-02T10:29:22+01:00

The program illustrates the use of lists and iterations.

Lists are used to hold multiple values in one variable, while iterations are used for repetitive operations

The has_duplicates function written in Python, where comments are used to explain each line is as follows:

#This initializes the test_dups list

test_dups = ["zzz","dog","bookkeeper","subdermatoglyphic","subdermatoglyphics"]

#This defines the histogram function

def histogram(myStr):

#This creates an empty dictionary

myDict = dict()

#This iterates through the string

for c in myStr:

#This counts the number of unique strings in the string

if c not in myStr:

myDict[c]=1

else:

myDict[c]+=1

#This returns the dictionary that contains the strings and their frequencies

return myDict

#This defines the has_duplicates function

def has_duplicates():

#This iterates through the strings in test_dups

for myStr in test_dups:

#This calls the histogram function

dictionary=histogram(myStr)

#This initializes chk to 0

chk = 0

#This iterates through the dictionary keys

for ch in dictionary.keys():

#For keys greater than 1,

if dictionary[ch] > 1:

#chk is set to 1 and the loop is exited

chk = 1

break

#This prints if the string has duplicates or not

if chk ==1:

print(myStr,"has duplicates")

else:

print(myStr,"has no duplicates")

has_duplicates()

Read more about lists and iterations at:

https://brainly.com/question/18917298