Leetcode Problem 472. Concatenated Words

472. Concatenated Words

Leetcode Solutions

Dynamic Programming Approach for Finding Concatenated Words

  1. Initialize an empty list answer to store the concatenated words.
  2. Insert all words into a HashSet dictionary for quick look-up.
  3. Iterate over each word in the words list.
  4. Create a boolean array dp of length word.length + 1 and set dp[0] to true.
  5. For each index i from 1 to word.length, check if there exists an index j such that dp[j] is true and word.substring(j, i) is in the dictionary.
  6. If such a j exists, set dp[i] to true.
  7. If dp[word.length] is true, add the word to the answer list.
  8. Return the answer list after processing all words.
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Depth-First Search (DFS) Approach for Finding Concatenated Words

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