Question

Python Code

Exercise #3

name:

count_lead_letter

arguments:

* s (str): s will all lowercase letter with no puntuation

returns:

A dictionary keyed by a letter and it's value is a count of the number of times that letter is the first character in a word in the string s

note:

Each word is seperated by a single space

Answer 1

CODE:

#function definition of count_lead_letter
def count_lead_letter(s):
#Declaring empty dictionary
d = dict()
#Splitting given string into words
#based on space between them
#And it will store all these words
#in a list s
s = s.split(' ')
#loop will iterate through the words
#the list of words
for i in s:
#Here i is the word in the string
#i[0] is te first character
#if the character not present in dictionary
if i[0] not in d:
# then set its value to 1
d[i[0]]=1
#if the character already present in dictionary
else:
#then increments it by 1
d[i[0]]+=1
#returnn dictionary d
return d

#Prompt user for the string
st = input("Enter String: ")
#Calling the function by pasing string ans store it in d
d = count_lead_letter(st)
#printig the dictionary d
print(d)

CODE SCREENSHOT:

OUTPUT:

#function definition of count lead letter def count lead letter(s): #Declaring empty dictionary d = dict() #Splitting given string into words #based on space between them #And it will store all these words #in a list s s = s.split('') #loop will iterate through the words #the list of words for i in s: #Here i is the word in the string #i[0] is te first character #if the character not present in dictionary if i[0] not in d: # then set its value to 1 d[i[0]]=1 #if the character already present in dictionary else: #then increments it by 1 d[i[0]]+=1 #returnn dictionary d return d #Prompt user for the string st = input ("Enter String: ") #Calling the function by pasing string ans store it in d d = count lead letter (st) #printig the dictionary d print (d)

LIUIIOIIUL L LLL L Enter String: hai hello this is to test the output only {'h': 2, 't': 4, 'i': 1, 'o': 2} >>>

Please make sure of indentation of the code(as shown in screenshot)

Here first we split the string into words by space using split method

and then we iterate through each word in list and check for whether the first character is present in dictionary or not

if it is not present then make its value as 1 with key as that letter

if it already present then increment the key's value to 1

then return the dictionary.

Please Don't forget to UPVOTE my solution and comment if you have any queries. I will defintely answer.