Create 332-Reconstruct-Itinerary.py

Author: neetcode-gh

332-Reconstruct-Itinerary.py

@@ -0,0 +1,26 @@
+class Solution:
+    def findItinerary(self, tickets: List[List[str]]) -> List[str]:
+        adj = { u:collections.deque() for u, v in tickets }
+        res = ["JFK"]
+        
+        tickets.sort()
+        for u, v in tickets:
+            adj[u].append(v)
+        
+        def dfs(cur):
+            if len(res) == len(tickets) + 1:
+                return True
+            if cur not in adj:
+                return False
+            
+            temp = list(adj[cur])
+            for v in temp:
+                adj[cur].popleft()
+                res.append(v)
+                if dfs(v):
+                    return res
+                res.pop()
+                adj[cur].append(v)
+            return False        
+        dfs("JFK")
+        return res