Check if two words are anagrams
Problem Given two words, determine whether one is an anagram of the other (same characters with the same multiplicities, order ignored).
Input / Output
- Input: strings a and b.
- Output: boolean.
Constraints
- Lengths up to 10^5; clarify case sensitivity, Unicode, and whether spaces/punctuation count.
Example
- "listen" / "silent" → true; "rat" / "car" → false.
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