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leetcode--007 word break I

注意:不一定是一分为2

 

 1 package leetcode; 2  3 import java.util.Set; 4  5 public class WordBreak11 { 6     public boolean wordBreak(String s, Set<String> dict) { 7         if(s==null||s.length()==0||dict==null||dict.size()==0){ 8             return false; 9         }10         int len = s.length();11         boolean[] can=new boolean[len+1];12         can[0]=true;13         for(int i=1;i<=len;i++){14             for(int j=0;j<i;j++){15                 if(can[j]&&dict.contains(s.substring(j,i))){16                     can[i]=true;17                     break;18                 }19             }20         }21         return can[len];22     }23 }