Consider the following code: sl='astronomy' s2='astrology' k = 1 i = 0 while i < len(s1): 6. 1 4 ...if sl[0:k] 7 s2 [0:k]: == ......k += 1 ...i += 1 8. What is the value of s1[:k-1] after executing the code above?
Consider the following code: sl='astronomy' s2='astrology' k = 1 i = 0 while i < len(s1): 6. 1 4 ...if sl[0:k] 7 s2 [0:k]: == ......k += 1 ...i += 1 8. What is the value of s1[:k-1] after executing the code above?
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
Related questions
Question
![### Consider the following code:
```python
s1 = 'astronomy'
s2 = 'astrology'
k = 1
i = 0
while i < len(s1):
if s1[0:k] == s2[0:k]:
k += 1
i += 1
```
#### Question:
What is the value of `s1[:k-1]` after executing the code above?
#### Select one:
- a. ast
- b. astro
- c. astrono
- d. astronomy
#### Explanation:
The code snippet provided is a Python script with a `while` loop that compares substrings of `s1` and `s2` from the start up to `k` characters. The variable `k` starts at `1` and is incremented if the substrings `s1[0:k]` and `s2[0:k]` are equal.
- Initially, `k = 1`, so it compares `s1[0:1]` with `s2[0:1]`. Since both are 'a', `k` is incremented to 2.
- Next, `s1[0:2]` is compared with `s2[0:2]`. Both are 'as', so `k` is incremented to 3.
- This continues with the comparisons resulting in 'ast', 'astr', and 'astro', until `s1[0:6]` ('astron') is compared with `s2[0:6]` ('astrol'). At this point, the substrings are no longer equal, so `k` is not incremented.
Thus, the last increment occurs at 'astro'. Therefore, `k = 6` at the end. The calculated substring `s1[:k-1]` would be `s1[:5]`, which is 'astro'.
#### Answer:
- **b. astro**](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0bf2a09b-e4db-477d-a3dc-9ff630d2d5f6%2F1de58abe-dbb3-436a-9294-8e7e2c0a2657%2Ff57gpb7_processed.png&w=3840&q=75)
Transcribed Image Text:### Consider the following code:
```python
s1 = 'astronomy'
s2 = 'astrology'
k = 1
i = 0
while i < len(s1):
if s1[0:k] == s2[0:k]:
k += 1
i += 1
```
#### Question:
What is the value of `s1[:k-1]` after executing the code above?
#### Select one:
- a. ast
- b. astro
- c. astrono
- d. astronomy
#### Explanation:
The code snippet provided is a Python script with a `while` loop that compares substrings of `s1` and `s2` from the start up to `k` characters. The variable `k` starts at `1` and is incremented if the substrings `s1[0:k]` and `s2[0:k]` are equal.
- Initially, `k = 1`, so it compares `s1[0:1]` with `s2[0:1]`. Since both are 'a', `k` is incremented to 2.
- Next, `s1[0:2]` is compared with `s2[0:2]`. Both are 'as', so `k` is incremented to 3.
- This continues with the comparisons resulting in 'ast', 'astr', and 'astro', until `s1[0:6]` ('astron') is compared with `s2[0:6]` ('astrol'). At this point, the substrings are no longer equal, so `k` is not incremented.
Thus, the last increment occurs at 'astro'. Therefore, `k = 6` at the end. The calculated substring `s1[:k-1]` would be `s1[:5]`, which is 'astro'.
#### Answer:
- **b. astro**
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
Recommended textbooks for you
Computer Networking: A Top-Down Approach (7th Edi…
Computer Engineering
ISBN:
9780133594140
Author:
James Kurose, Keith Ross
Publisher:
PEARSON
Computer Organization and Design MIPS Edition, Fi…
Computer Engineering
ISBN:
9780124077263
Author:
David A. Patterson, John L. Hennessy
Publisher:
Elsevier Science
Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:
9781337569330
Author:
Jill West, Tamara Dean, Jean Andrews
Publisher:
Cengage Learning
Computer Networking: A Top-Down Approach (7th Edi…
Computer Engineering
ISBN:
9780133594140
Author:
James Kurose, Keith Ross
Publisher:
PEARSON
Computer Organization and Design MIPS Edition, Fi…
Computer Engineering
ISBN:
9780124077263
Author:
David A. Patterson, John L. Hennessy
Publisher:
Elsevier Science
Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:
9781337569330
Author:
Jill West, Tamara Dean, Jean Andrews
Publisher:
Cengage Learning
Concepts of Database Management
Computer Engineering
ISBN:
9781337093422
Author:
Joy L. Starks, Philip J. Pratt, Mary Z. Last
Publisher:
Cengage Learning
Prelude to Programming
Computer Engineering
ISBN:
9780133750423
Author:
VENIT, Stewart
Publisher:
Pearson Education
Sc Business Data Communications and Networking, T…
Computer Engineering
ISBN:
9781119368830
Author:
FITZGERALD
Publisher:
WILEY