add problem #27 remove element

remove_element.py

@@ -0,0 +1,19 @@
+class Solution:
+    def remove_element(nums: list[int], val: int) -> int:
+        write_index, read_index = 0, 0
+
+        while read_index <= len(nums)-1:
+            if nums[read_index] != val:
+                nums[write_index], nums[read_index] = nums[read_index], nums[write_index]
+                write_index +=1
+                read_index +=1
+            else:
+                nums[read_index] = "_"
+                read_index +=1
+        return write_index
+
+if __name__ == "__main__":
+    nums_list = [0,1,2,2,3,0,4,2]
+    result = Solution.remove_element(nums=nums_list, val=2)
+    print(result) # output: 5
+    print(nums_list) # output: [0, 1, 3, 0, 4, '_', '_', '_']