solve 4

Author: lylaminju

insert-interval/pmjuu.py

@@ -0,0 +1,32 @@
+'''
+시간 복잡도: O(n)
+공간 복잡도: O(n)
+'''
+from typing import List
+
+
+class Solution:
+    def insert(self, intervals: List[List[int]], newInterval: List[int]) -> List[List[int]]:
+        n = len(intervals)
+        start, end = newInterval
+        i = 0
+        result = []
+
+        # before merging
+        while i < n and intervals[i][1] < start:
+            result.append(intervals[i])
+            i += 1
+        
+        # merge
+        while i < n and intervals[i][0] <= end:
+            start = min(start, intervals[i][0])
+            end = max(end, intervals[i][1])
+            i += 1
+        result.append([start, end])
+            
+        # after merging
+        while i < n:
+            result.append(intervals[i])
+            i += 1
+        
+        return result