add some array playing

arrays_and_strings/array-duplicate-zeros.py

@@ -0,0 +1,33 @@
+# Given a fixed-length integer array arr, duplicate each occurrence of zero, 
+# shifting the remaining elements to the right.
+
+
+def duplicate_zeros(arr: list[int]) -> list[int]:
+        """
+        Do not return anything, modify arr in-place instead.
+        """
+        
+        i = 0
+        while i < len(arr):
+            
+            if arr[i] == 0 and i != len(arr) - 1:
+
+                range_here = len(arr) - (i + 2)
+                while range_here > 0:
+                    arr[i + range_here + 1] = arr[i + range_here]
+                    range_here -= 1
+
+                arr[i+1] = 0
+                i += 2
+            
+            else:
+                i += 1
+
+
+        return arr
+
+
+if __name__ == "__main__":
+
+    arr = [1, 0, 2, 3, 0, 4, 5, 0]
+    print(duplicate_zeros(arr))