Word Break - Medium

class Solution {
public:
    bool wordBreak(string s, vector<string>& wordDict) {
        int len = s.length();
        vector<bool> dp(len+1,false);
        dp[0] = true;
        
        for(int i=1;i<=len;i++){
            for(int j=0;j<i;j++){
               if(dp[j] and find(wordDict.begin(),wordDict.end(),s.substr(j,i-j))!=wordDict.end()){
                dp[i]=true;   
               }              
            }
        }
         return dp[len];
    }
};