Question Definition
Given a non-empty string s and a dictionary wordDict containing a list of non-empty words, determine if s can be segmented into a space-separated sequence of one or more dictionary words. You may assume the dictionary does not contain duplicate words.
For example, given
s = “leetcode”,
dict = ["leet", "code"].
Return true because “leetcode” can be segmented as “leet code”.
Java Solution
public boolean wordBreak(String s, List<String> wordDict) {
if(s == null || s.length() == 0)
return true;
boolean[] res = new boolean[s.length() + 1];
res[0] = true;
for(int i = 0; i < s.length(); i++)
{
StringBuilder str = new StringBuilder(s.substring(0, i + 1));
for(int j=0;j<=i;j++)
{
if(res[j] && wordDict.contains(str.toString()))
{
res[i+1] = true;
break;
}
str.deleteCharAt(0);
}
}
return res[s.length()];
}
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