From 58ebd8c8b84d6cfd81d65b0d8bd699e116b78e13 Mon Sep 17 00:00:00 2001
From: KaseToatz1337 <airfryerkipcorn@gmail.com>
Date: Thu, 3 Oct 2024 15:32:25 +0200
Subject: [PATCH] fix 1st thingy

---
 BAI1/Program.cs | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/BAI1/Program.cs b/BAI1/Program.cs
index 3dc36ad..dbb881f 100644
--- a/BAI1/Program.cs
+++ b/BAI1/Program.cs
@@ -15,23 +15,27 @@ namespace BAI
         /// ------------------------------------------------------------
         public static void Opdr1FilterList(List<int> lijst)
         {
-            Dictionary<int, int> occurences = [];
-            foreach (int i in lijst)
+            Dictionary<int, int> positions = [];
+            for (int i = 0; i < lijst.Count; i++)
             {
-                if (occurences.TryGetValue(i, out int value))
+                if (positions.TryGetValue(lijst[i], out _))
                 {
-                    occurences[i] = ++value;
+                    positions[lijst[i]] = -1;
                 }
                 else
                 {
-                    occurences[i] = 1;
+                    positions[lijst[i]] = i;
                 }
             }
-            foreach (int i in occurences.Keys)
+            for (int i = 0; i < lijst.Count;)
             {
-                if (occurences[i] == 1)
+                if (positions[lijst[i]] != -1)
                 {
-                    lijst.Remove(i);
+                    lijst.RemoveAt(i);
+                }
+                else
+                {
+                    i++;
                 }
             }
         }