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🔥Word Break: Dictionary Segmentability DPMedium
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MediumDynamic Programming•Acceptance: 46.2%
Word Break: Dictionary Segmentability DP
Targeted in FAANG & Tech OA:AmazonGoogleMeta
Real-World Engineering Context
Used in NLP tokenization (Chinese/Japanese text segmentation without spaces), search query keyword splitting, and URL slug parser segmenters.
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.
Sample Test Cases
Input: ["leetcode",["leet","code"]]
Expected: true
Input: ["applepenapple",["apple","pen"]]
Expected: true
Input: ["catsandog",["cats","dog","sand","and","cat"]]
Expected: false
Constraints
- 1 <= s.length <= 300
- 1 <= wordDict.length <= 1000
- 1 <= wordDict[i].length <= 20
- s and wordDict[i] consist of only lowercase English letters.
- All the strings of wordDict are unique.
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