diff --git a/src/part4/aufg5.java b/src/part4/aufg5.java
new file mode 100644
index 0000000..915f387
--- /dev/null
+++ b/src/part4/aufg5.java
@@ -0,0 +1,55 @@
+package part4;
+
+import java.util.Arrays;
+
+public class aufg5 {
+
+    // =====================
+    // Der Goldfrosch
+    // =====================
+
+    public static void main(String[] args){
+        int no_frogs = Integer.MAX_VALUE;
+
+        int ARRAY_LENGTH = 46;  // 46 is sufficient for Int.MaxValue
+        int current_pos;
+        int max_pos = 1;
+        int bucket0 = 0;
+        int bucket_Neg_1 = 0;
+
+        int[] field = new int[ARRAY_LENGTH];
+
+        Arrays.fill(field,1);
+
+        for(int i = 0; i < no_frogs; i++){
+            current_pos = 1;
+
+            while(current_pos > 0) {
+                // flip arrow
+                if (field[current_pos + 1] == 1) {
+                    field[current_pos + 1] = -2;
+                } else if (field[current_pos + 1] == -2) {
+                    field[current_pos + 1] = 1;
+                }
+
+                // jump
+                current_pos += field[current_pos + 1];
+                if (current_pos > max_pos) {
+                    max_pos = current_pos;
+                }
+            }
+
+            // end
+            if(current_pos == 0){
+                bucket0 += 1;
+            } else if (current_pos == -1){
+                bucket_Neg_1 += 1;
+            }
+        }
+
+        System.out.println("Anzahl Frösche: " + no_frogs);
+        System.out.println("Der Froschrekord liegt bei Feld: " + max_pos);  //might be 1 less than actual record
+        System.out.println("Eimer auf Feld -1: " + bucket_Neg_1);
+        System.out.println("Eimer auf Feld  0: " + bucket0);
+    }
+}
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