The problem of finding common characters from words involves using frequency maps across multiple strings.
The key strategy includes counting the times each character appears in each word, keeping the minimum count for each character across all words, and rebuilding the result based on that minimum count.
The provided pseudocode outlines the steps involved in this approach, initializing frequency maps, comparing frequencies, and building the final result based on the frequency of characters.
The time complexity of this approach is O(N * K) and the space complexity is O(1), making it a reusable pattern for various similar problems.