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Grokking the Coding Interview Patterns

Solution: Group Anagrams

Explore how to group anagrams by analyzing word character frequencies and using hash maps. Understand both naive sorting and optimized frequency counting methods, and learn to evaluate their time and space complexities for effective problem-solving.

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Statement

Given a list of words or phrases, group the words that are anagrams of each other. An anagram is a word or phrase formed from another word by rearranging its letters.

Constraints:

Let strs be the list of strings given as input to find the anagrams.

  • 1≤1 \leq strs.length ≤103\leq 10^3
  • 0≤0 \leq strs[i].length
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