Question

4. Write a PYTHON program that reads in three strings and sorts them lexicographically. Do NOT user the sort function.

Enter string 1: Charlie

Enter string 2: Able

Enter string 3: Baker

Able

Baker

Charlie

1. Your code with comments
2. A screenshot of the execution

Test Cases:

                  Able, Baker, Charlie

                  Baker, Charlie, Able

                  Charlie, Able, Baker

                  Able, Charlie, Baker

                  Baker, Able, Charlie

                  Charlie, Baker, Able

Answer 1

Source Code in Python:

#inputs
s1=input("Enter string 1: ")
s2=input("Enter string 2: ")
s3=input("Enter string 3: ")
print("Strings after sorting :")
if s1.lower()<=s2.lower() and s1.lower()<=s3.lower(): #if s1 is lexigraphically lower than the other strings
print(s1)
if(s2.lower()<=s3.lower()): #if s2 is lexigraphically lower than s3
print(s2)
print(s3)
else: #if s3 is lexigraphically lower than s2
print(s3)
print(s2)
elif s2.lower()<=s1.lower() and s2.lower()<=s3.lower(): #if s2 is lexigraphically lower than the other strings
print(s2)
if(s1.lower()<=s3.lower()): #if s1 is lexigraphically lower than s3
print(s1)
print(s3)
else: #if s3 is lexigraphically lower than s1
print(s3)
print(s1)
else: #if s3 is lexigraphically lower than the other strings
print(s3)
if(s1.lower()<=s2.lower()): #if s1 is lexigraphically lower than s2
print(s1)
print(s2)
else: #if s2 is lexigraphically lower than s1
print(s2)
print(s1)

Output: