added new lines at end of files

Author: sumanth-botlagunta

python/design_add_and_search_words_data_structure.py

@@ -34,4 +34,3 @@ def dfs(j, root):
                     curr = curr.children[ch]
             return curr.word
         return dfs(0, self.root)
-

python/design_browser_history.py

@@ -15,4 +15,4 @@ def back(self, steps: int) -> str:
 
     def forward(self, steps: int) -> str:
         self.ptr = min(len(self.history) - 1, self.ptr + steps)
-        return self.history[self.ptr]
+        return self.history[self.ptr]    

src/DesignBrowserHistory.java

@@ -23,4 +23,4 @@ public String forward(int steps) {
         this.ptr = Math.min(this.history.size() - 1, this.ptr + steps);
         return this.history.get(this.ptr);
     }
-}
+}