Time: 37 ms (68.92%), Space: 16.4 MB (9.76%) - LeetHub

27-remove-element/27-remove-element.py

@@ -0,0 +1,22 @@
+class Solution:
+    def removeElement(self, nums: List[int], val: int) -> int:
+        if len(nums) == 0 :
+            return 0
+        
+
+        backIndex = len(nums) - 1
+        i = 0
+        while i < backIndex:
+            if nums[i] == val :
+                while nums[backIndex] == val:
+                    backIndex -= 1
+                    if backIndex == i:
+                        return backIndex if nums[backIndex] == val else backIndex + 1
+                    
+                nums[i] = nums[backIndex]
+                nums[backIndex] = val
+                backIndex -= 1
+            i += 1
+            
+        
+        return backIndex if nums[backIndex] == val else backIndex + 1