Create 448-Find-all-Numbers-Disappeared-in-an-Array.py

Author: neetcode-gh

448-Find-all-Numbers-Disappeared-in-an-Array.py

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+class Solution:
+    def findDisappearedNumbers(self, nums: List[int]) -> List[int]:
+        for n in nums:
+            i = abs(n) - 1
+            nums[i] = -1 * abs(nums[i])
+            
+        res = []
+        for i, n in enumerate(nums):
+            if n > 0:
+                res.append(i + 1)
+        return res