Word Break II
Explore how to solve the Word Break II problem by using dynamic programming to find all possible valid word sequences from a string, leveraging a given word dictionary. Understand the approach to break down strings efficiently for coding interviews and practice implementing your solution in JavaScript.
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Statement
You are given a string, s, and an array of strings, wordDict, representing a dictionary. Your task is to add spaces to s to break it up into a sequence of valid words from wordDict. 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:
-
s.length -
wordDict.length -
wordDict[i].length -
sandwordDict[i]consist of only lowercase English letters. -
All the strings of
wordDictare unique.
Examples
Understand the problem
Let’s take a moment to make sure you’ve correctly understood the problem. The quiz below helps you check if you’re solving the correct problem:
Word Break II
What is the output if the following input string and dictionary are provided as input?
s = “pineapplepenapple”
word_dict = [“apple”, “pen”, “applepen”, “pine”, “pineapple”]
[“pine apple pen apple”, “pineapple pen apple”, “pine applepen apple”]
[“pine apple pen apple”, “pine applepen apple”]
[“pineapple pen apple”]
[]
Figure it out!
We have a game for you to play. Rearrange the logical building blocks to develop a clearer understanding of how to solve this problem.
Try it yourself
Implement your solution in the following coding playground.
export function wordBreak(s, wordDict){// Replace this placeholder return statement with your codereturn []}