Question

Use the Pythone programming language. see the #bold hashtags in the code for instructions. Also use the website provided for an idea on how the code should be approached. please provide the code along with a screen shot of the code working with the outcome.

s1 = str("abc text xyz")
print("String s1 =", s1)
print("First letter of s1 = ", s1[0])
print("length of s1= ", len(s1))#len for length
length = len(s1)
last = s1[length-1]
print("Last letter = ", last)
print("First four letters:", s1[4:8])
# copy the content of one string to another
s2 = s1.upper()
print("length of s2 =", len(s2))
print("String s2 =", s2)



# Copy the letters form s1 into s2 in the reverse order
# output = zyx txet cba
# https://www.w3schools.com/python/python_howto_reverse_string.asp
s2 = s1[::-1]
# the a reverse count
print("[reverse s1] String s2 =", s2)

i = 0
aList = ['a']*len(s1)
while i < len(s1):
aList[i] = s1[len(s1)-1-i]
i = i + 1
print("String s1 =", s1)
print("aList =", aList)

Answer 1

In python, we have a feature called slicing.

1. First, we will take the input
2. Then inside another variable, we will copy the variable
3. We will apply negative slicing which means we will start from the end of the string.
4. The index starts to move one step back and stores the reverse string in the variable s2
5. Print the reversed string

s1=str("abc text xyz") #input the sentence 
s2=s1[::-1] #copying the sentence and applying slicing 
print(s2) #print the reverse

Below is the screenshot of the code and the output