Question

Write a function called ReverseLetters that takes an input phrase consisting of a single word and reverses the sequence of letters between the first letter and last letter. The input phrase could be a character vector of any length.

Answer 1

Answer:

# The function reverseLetter is defined

def reverseLetter(received_word):

   # The first letter of the word is assigned to a variable using index 0

   firstLetter = received_word[0]

   # The last letter of the word is assigned to a variable using index of

   # string length - 1

   lastLetter = received_word[len(received_word) - 1]

   # reverse letters in between first and last letter is defined as

  # empty string

   reverseBetween = ""

   # A counter is defined to control the loop during the reversal

   # counter value is 2 from the length of the received string

   # The 2 is for the first and last letter remove

   counter = len(received_word) - 2

   # The while loop start

   while counter >= 1:

       # The reverseBetween string is concatenated with corresponding

      # index of received word

       # The index is from high to low since the process is string reversal

       reverseBetween += received_word[counter]

       # The value of counter is decremented

       counter -= 1

   # The reversed string is displayed with no separator

   print(firstLetter, reverseBetween, lastLetter, sep="")    

Explanation:

The code is well commented.

reverseLetter("come") will output cmoe

reverseLetter("welcome") will output wmoclee

reverseLetter("brainly") will output blniary