Data update

Task/Remove-duplicate-elements/PascalABC.NET/remove-duplicate-elements.pas

@@ -0,0 +1,17 @@
+begin
+  // By algorithm
+  var nums := Arr(1, 1, 2, 3, 4, 4);
+  var unique := new List<integer>;
+  foreach var x in nums do
+    if x not in unique then
+      unique.Add(x);
+  unique.Println;
+
+  // By method
+  var unique2 := nums.Distinct;
+  unique2.Println;
+
+  // Using hash set
+  var unique3 := HSet(nums);
+  unique3.Println;
+end.