week 5: Word Break

Author: prograsshopper

word-break/prograsshopper.py

@@ -0,0 +1,15 @@
+# Time complexity: O(N∗N∗M)
+# Space complexity: O(N)
+class Solution:
+    def wordBreak(self, s: str, wordDict: List[str]) -> bool:
+        dp = [False] * (len(s) + 1)
+        dp[0] = True
+        wordSet = set(wordDict)
+
+        for i in range(1, len(s) + 1):
+            for j in range(0, i):
+                if dp[j]:
+                    if s[j:i] in wordSet:
+                        dp[i] = True
+                        break
+        return dp[len(s)]