25 lines
633 B
Markdown
25 lines
633 B
Markdown
---
|
|
title: is_anagram
|
|
tags: string,intermediate
|
|
---
|
|
|
|
Checks if a string is an anagram of another string (case-insensitive, ignores spaces, punctuation and special characters).
|
|
|
|
Use `isalnum()` to filter out non-alphanumeric characters, `lower()` to transform each character to lowercase.
|
|
Use `collections.Counter` to count the resulting characters for each string and compare the results.
|
|
|
|
```py
|
|
from collections import Counter
|
|
|
|
def is_anagram(s1, s2):
|
|
return Counter(
|
|
c.lower() for c in s1 if c.isalnum()
|
|
) == Counter(
|
|
c.lower() for c in s2 if c.isalnum()
|
|
)
|
|
```
|
|
|
|
```py
|
|
is_anagram("#anagram", "Nag a ram!") # True
|
|
```
|