array and dic

26-240604-pass/main.py

@@ -0,0 +1,10 @@
+class Solution:
+    def removeDuplicates(self, nums: List[int]) -> int:
+        k = {}
+        cnt = 0
+        for num in nums:
+            if num not in k:
+                nums[cnt] = num
+                cnt += 1
+                k[num] = 1
+        return cnt