https://leetcode.com/problems/summary-ranges

easy/summary_ranges.py

@@ -0,0 +1,33 @@
+# https://leetcode.com/problems/summary-ranges
+
+from typing import List
+
+class Solution:
+    def summaryRanges(self, nums: List[int]) -> List[str]:
+        curr_num: List[int] = []
+        result: List[str] = []
+        for num in nums:
+            if len(curr_num) == 0:
+                curr_num.append(num)
+                continue
+            match len(curr_num):
+                case 0:
+                    curr_num.append(num)
+                case 1:
+                    if curr_num[0] + 1 == num:
+                        curr_num.append(num)
+                    else:
+                        result.append(str(curr_num[0]))
+                        curr_num = [num]
+                case 2:
+                    if curr_num[1] + 1 == num:
+                        curr_num[1] += 1
+                    else:
+                        result.append('->'.join([str(curr_num[0]), str(curr_num[1])]))
+                        curr_num = [num]
+        if len(curr_num) == 1:
+            result.append(str(curr_num[0]))
+        elif len(curr_num) == 2:
+            result.append('->'.join([str(curr_num[0]), str(curr_num[1])]))
+        return result
+