WordBreak.java

// 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".

public class WordBreak {
    public boolean wordBreak(String s, Set<String> wordDict) {
        boolean[] dp = new boolean[s.length() + 1];
        
        dp[0] = true;
        
        for(int i = 1; i <= s.length(); i++) {
            for(int j = 0; j < i; j++) {
                if(dp[j] && wordDict.contains(s.substring(j, i))) {
                    dp[i] = true;
                    break;
                }
            }
        }
        
        return dp[s.length()];
    }
}