|
| 1 | +packagehard; |
| 2 | +importjava.util.*; |
| 3 | +/** |
| 4 | + * Created by fishercoder1534 on 10/4/16. |
| 5 | + */ |
| 6 | +publicclassWordBreakII { |
| 7 | +publicList<String>wordBreak(Strings,Set<String>wordDict) { |
| 8 | +returndfs(s,wordDict,newHashMap<String,ArrayList<String>>()); |
| 9 | + } |
| 10 | + |
| 11 | +privateList<String>dfs(Strings,Set<String>wordDict, |
| 12 | +HashMap<String,ArrayList<String>>map) { |
| 13 | +if(map.containsKey(s)){ |
| 14 | +returnmap.get(s); |
| 15 | + } |
| 16 | + |
| 17 | +ArrayList<String>res =newArrayList<String>(); |
| 18 | +if(s.length() ==0){ |
| 19 | +res.add(""); |
| 20 | +returnres; |
| 21 | + } |
| 22 | + |
| 23 | +for(Stringword :wordDict){ |
| 24 | +if(s.startsWith(word)){ |
| 25 | +List<String>subList =dfs(s.substring(word.length()),wordDict,map); |
| 26 | +for(Stringsub :subList){ |
| 27 | +res.add(word + (sub.length() ==0 ?"" :" ") +sub); |
| 28 | + } |
| 29 | + } |
| 30 | + } |
| 31 | +map.put(s,res); |
| 32 | +returnres; |
| 33 | + } |
| 34 | + |
| 35 | +publicstaticvoidmain(String...strings){ |
| 36 | +List<String>temp =newArrayList<String>(); |
| 37 | +System.out.println(temp); |
| 38 | +List<String>temp2 =newArrayList<String>(temp); |
| 39 | +temp2.add(""); |
| 40 | +System.out.println(temp2); |
| 41 | + |
| 42 | +WordBreakIItest =newWordBreakII(); |
| 43 | +Set<String>wordDict =newHashSet<>(); |
| 44 | +wordDict.add("cat"); |
| 45 | +wordDict.add("cats"); |
| 46 | +wordDict.add("sand"); |
| 47 | +wordDict.add("and"); |
| 48 | +wordDict.add("dog"); |
| 49 | +Strings ="catsanddog"; |
| 50 | +// List<String> list = test.wordBreak(s, wordDict); |
| 51 | +List<String>list =test.wordBreak(s,wordDict); |
| 52 | +for(Stringword :list){ |
| 53 | +System.out.print(word +", "); |
| 54 | + } |
| 55 | +System.out.println(); |
| 56 | + } |
| 57 | +} |