Time: 3 ms (91.42%), Space: 17.7 MB (54.42%) - LeetHub

Author: hogan-tech

0768-partition-labels/0768-partition-labels.py

@@ -0,0 +1,31 @@
+# time complexity: O(n)
+# space complexity: O(1)
+from typing import List
+
+
+class Solution:
+    def partitionLabels(self, s: str) -> List[int]:
+        lastIdx = {c: i for i, c in enumerate(s)}
+        right = 0
+        left = 0
+        result = []
+        for i, c in enumerate(s):
+            right = max(right, lastIdx[c])
+            if i == right:
+                result.append(right - left + 1)
+                left = right + 1
+        return result
+
+
+'''
+ababcbacadefegdehijhklij
+{'a': 8, 'b': 5, 'c': 7, 'd': 14, 'e': 15, 'f': 11,
+    'g': 13, 'h': 19, 'i': 22, 'j': 23, 'k': 20, 'l': 21}
+
+5 == 5 
+result.append
+'''
+s = "ababcbacadefegdehijhklij"
+print(Solution().partitionLabels(s))
+s = "eccbbbbdec"
+print(Solution().partitionLabels(s))