#P0004. 替换 URL 中的内容
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ID: 14
Type: Default
1000ms
16MiB
Tried: 48
Accepted: 20
Difficulty: 1
Uploaded By:
sophon
Tags> 替换 URL 中的内容
1. Problem Description
URL (Uniform Resource Locator) is the address that identifies resources on the internet, helping us find webpages, images, files, etc. on the web.
A URL is typically composed of several parts, including:
- Protocol: Common ones are http or https
- Hostname: For example, www.google.com, skyline-ai.space
- Path: Separated by /, helping us locate the resource on the host
- Query Parameters: Used to pass additional information to the server, represented by the part after the question mark
?in the URL
Given a URL, the path contains the word "book". Let's replace all occurrences of "book" with "wiki".
Here are some string operations that might be useful in the problem:
| Operation | Description |
|---|---|
str.find(sub) |
Finds the first occurrence of the substring sub in str, returns -1 if not found |
str.replace(old, new) |
Returns a new string with all occurrences of old replaced by new in str |
str.upper() |
Converts all letters in str to uppercase |
str.lower() |
Converts all letters in str to lowercase |
str.strip(chars) |
Returns a new string with leading and trailing characters in chars removed from str |
str.startswith(sub) |
Checks if str starts with the substring sub |
str.endswith(sub) |
Checks if str ends with the substring sub |
2. Input and Output
Input Method
- A string representing the URL
- Use
input()to read in the string
Output Method
- A string representing the modified URL
- Use
print()to output the result
Input and Output Example
# Input:
https://www.amazon.com/Sweet-Tooth-Desserts-Save-Baking/book/0593581997/ref=zg_d_sccl_2/139-7012919-4701521?pd_rd_w=yHnET
# Output:
https://www.amazon.com/Sweet-Tooth-Desserts-Save-Baking/wiki/0593581997/ref=zg_d_sccl_2/139-7012919-4701521?pd_rd_w=yHnET