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Solution: Word Break II

Explore dynamic programming to efficiently solve the Word Break II problem. Understand how to build a table of valid sentence sequences from a string using a dictionary, optimize recursive methods with memoization, and handle overlapping subproblems for better performance.

Statement

You are given a string, s, and an array of strings, word_dict, representing a dictionary. Your task is to add spaces to s to break it up into a sequence of valid words from word_dict. We are required to return an array of all possible sequences of words (sentences). The order in which the sentences are listed is not significant.

Note: The same dictionary word may be reused multiple times in the segmentation.

Constraints:

  • 11 \leq s.length 20\leq 20 ...