word break solution

Author: yuseok89

word-break/yuseok89.py

@@ -0,0 +1,38 @@
+#TC: O()
+#SC: O()
+class Solution:
+    def wordBreak(self, s: str, wordDict: List[str]) -> bool:
+
+        word_set = set()
+
+        max_len = 0
+        min_len = 300
+
+        for word in wordDict:
+            word_set.add(word)
+            max_len = max(max_len, len(word))
+            min_len = min(min_len, len(word))
+
+        v = set()
+
+        def rec(cur):
+            if cur in v:
+                return False
+
+            v.add(cur)
+
+            if len(cur) == 0:
+                return True
+
+            for l in range(min_len, max_len + 1):
+                if len(cur) < l:
+                    return False
+
+                if cur[0:l] in word_set:
+                    if rec(cur[l:]):
+                        return True
+
+            return False
+
+        return rec(s)
+