给定一个非空字符串 s 和一个包含非空单词列表的字典 wordDict,在字符串中增加空格来构建一个句子,使得句子中所有的单词都在词典中。返回所有这些可能的句子。
说明: 分隔时可以重复使用字典中的单词。 你可以假设字典中没有重复的单词。
示例 1:输入:s = "catsanddog"wordDict = ["cat", "cats", "and", "sand", "dog"]输出:["cats and dog","cat sand dog"]示例 2:输入:s = "pineapplepenapple"wordDict = ["apple", "pen", "applepen", "pine", "pineapple"]输出:["pine apple pen apple","pineapple pen apple","pine applepen apple"]解释: 注意你可以重复使用字典中的单词。示例 3:输入:s = "catsandog"wordDict = ["cats", "dog", "sand", "and", "cat"]输出:[]