Word Break
Detailed guide and Python implementation for the 'Word Break' problem.
Problem Statement
Given a string s and a dictionary of strings wordDict, return True if s can be segmented into a space-separated sequence of one or more dictionary words.
Note that the same word in the dictionary may be reused multiple times in the segmentation.
Write a function wordBreak(s: str, wordDict: List[str]) -> bool.
- •1 <= len(s) <= 300
- •1 <= len(wordDict) <= 1000
- •1 <= len(wordDict[i]) <= 20
- •s and wordDict[i] consist of only lowercase English letters
- •All the strings of wordDict are unique
Examples
s = "leetcode", wordDict = ["leet","code"]
True
Return True because "leetcode" can be segmented as "leet code".
s = "applepenapple", wordDict = ["apple","pen"]
True
Return True because "applepenapple" can be segmented as "apple pen apple".
s = "catsandog", wordDict = ["cats","dog","sand","and","cat"]
False
No valid segmentation exists.
Need a Hint?
Edge Cases to Watch
- Empty input structures
- Single element inputs
- Large numerical bounds
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