Question

Write the code in python programming Language

String Statistics: Write a program that reads a string from the user and displays the following information about the string:

(a) the length of the string,

(b) a histogram detailing the number of occurrences of each vowel in the string (details provided below),

(c) the number of times the first character of the string occurs throughout the entire string,

(d) the number of times the last character of the string occurs throughout the entire string, and

(e) the number of occurrences of digits in the string, i.e. the number of occurrences of any of the characters 0, 1, 2, . . . 9.

Furthermore, your program must contain the following functions:

(a) main: The main function of this program should handle reading the input string from the user and calling the other functions listed below. Additionally, main should be the first function called when the program is executed.

(b) compute_len: This function must accept one string parameter and return the length of the given string.

(c) display_hist: This function must take two arguments: l and c. The first argument should be a string representing a label, and the second argument should be a positive integer representing the frequency of the label. The function should display a histogram with l as the first character on the line, followed by a | and followed by c stars (*). As an example, if the function is called with the following parameters: display_hist(“a”, 5) then it should display the chart:

a | *****

Note: If the function is called with second argument equal to 0, the method should display a histogram without any stars.

Hint: To print multiple strings to the same line of the terminal, you must use the following call to the print function:

print(s, end="")

where s is the string to be printed to the terminal.

This function must be used to produce the histogram of vowel frequencies for the input string. For example, if the user enters the string “queueing" then the histogram produced by your program to the terminal should be:

a |

e | ∗ ∗

i | ∗

o |

u | ∗ ∗

(d) char_count: This method must accept two parameters: a string s and a string c. In your function, you may assume that the length of the string s is at least 1 and the length of the string c is exactly 1. The function must return the number of times the character c occurs in the string s.

Your program must use the above methods to compute the required information about the input string. You will have to call the above methods multiple times in your program with appropriate arguments.

Answer 1

Here is the code along with the screenshot:

def char_count(s, c):
count = 0
#count the occurence of character
#by iterating over the string
for sc in s:
if sc == c:
count += 1

return count

def display_hist(l, c):
#print the label
print(l+"|",end="")

#print the required number of stars
for i in range(c):
print("*", end="")
print()

def compute_len(s):
return len(s)

def main():
#take input
inStr = input("Enter the string:")
print("Length is", compute_len(inStr))

#print vowel histogram
vowels = ['a', 'e', 'i', 'o', 'u']
for c in vowels:
display_hist(c, char_count(inStr, c))

#print first and last character count
print("First character count is", char_count(inStr, inStr[0]))
print("Last character count is", char_count(inStr, inStr[-1]))

#print digit count
digits = [str(i) for i in range(10)]
for d in digits:
print("Digit", d, "count is", char_count(inStr, d))

if __name__ == "__main__":
main()

Here are some sample outputs:

Comment in case of any doubts.