242. Valid Anagram

Easy

Given two strings s and t, return true if t is an anagram of s, and false otherwise.

An Anagram is a word or phrase formed by rearranging the letters of a different word or phrase, typically using all the original letters exactly once.

Example 1:

Input: s = "anagram", t = "nagaram"
Output: true

Example 2:

Input: s = "rat", t = "car" Output: false

#### Constraints:

- 1 <= s.length, t.length <= 5 * 104
- s and t consist of lowercase English letters.

## Solution

```python
class Solution:
    def isAnagram(self, s: str, t: str) -> bool:
        def freq(s):
            d = {}
            for c in s:
                d[c] = d.get(c, 0) + 1
            return d

        return freq(s) == freq(t)