Given a non-empty string s and a dictionary wordDict containing a list of non-empty words, add spaces in s to construct a sentence where each word is a valid dictionary word. Return all such possible sentences.
Note:
- The same word in the dictionary may be reused multiple times in the segmentation.
- You may assume the dictionary does not contain duplicate words.
Example 1:
Input: s = "catsanddog" wordDict =["cat", "cats", "and", "sand", "dog"]Output:[ "cats and dog", "cat sand dog" ]
Example 2:
Input: s = "pineapplepenapple" wordDict = ["apple", "pen", "applepen", "pine", "pineapple"] Output: [ "pine apple pen apple", "pineapple pen apple", "pine applepen apple" ] Explanation: Note that you are allowed to reuse a dictionary word.
Example 3:
Input: s = "catsandog" wordDict = ["cats", "dog", "sand", "and", "cat"] Output: []