keep going

amazon.cpp

@@ -1670,17 +1670,35 @@ Explanation: Buy on day 2 (price = 1) and sell on day 5 (price = 6), profit = 6-
 
 
 
+Word Break
+class Solution {
+public:
+    bool wordBreak(string s, vector<string>& wordDict) {
+        unordered_set<string> dict;
+        for(auto &key: wordDict){
+            dict.insert(key);
+        }
+        vector<bool> matched(s.size(), false);
 
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+        int last_match_pos = 0;
+        for(int i=0; i<s.size(); i++){
+            string sub = s.substr(last_match_pos, i-last_match_pos);
+            cout<<sub<<endl;
+            auto it = dict.find(sub);
+            if(it != dict.end()){
+              dict.
+              for(int inner=0; inner<sub.size(); inner++){
+                  matched[inner+last_match_pos] = true;
+              }
+              last_match_pos = i+1;
+            } 
+        }
+        for(int i=0; i<matched.size(); i++){
+            if(!matched[i]) return false;
+        }
+        return true;
+    }
+};