From 35ec7de2168b683b838c7203854a3e2ce4f90f4c Mon Sep 17 00:00:00 2001
From: Philippe Zwietering <philippe.zwietering@gmail.com>
Date: Sat, 28 Mar 2020 18:19:36 +0100
Subject: [PATCH] Finished 4, palindrome was 906609

---
 4/main.py | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 4/main.py

diff --git a/4/main.py b/4/main.py
new file mode 100644
index 0000000..5f42dac
--- /dev/null
+++ b/4/main.py
@@ -0,0 +1,62 @@
+import os
+import numpy
+
+
+
+# Find the largest palindrome made from the product of two 3-digit numbers
+
+def reverse(s):
+    return s[::-1]
+
+
+
+def getPalins(n):
+    res = [0]
+    m = 1
+
+    while len(str(m)) <= n:
+        s = str(m)
+        if s == reverse(s):
+            res.append(m)
+        m = m + 1
+
+    return res
+
+
+def checkPalin(n):
+    s = str(n)
+    return s == reverse(s)
+
+
+def getProducts(lower, upper):
+    res = []
+
+    for i in range(lower, upper + 1):
+        for j in range(lower, upper + 1):
+            res.append(i*j)
+
+    return res
+
+
+
+
+
+
+
+
+def main():
+    testtext = "Hello, this is Patrick"
+    print(testtext)
+
+    # palins = getPalins(6)
+    # print(palins)
+
+
+    prods = getProducts(100, 999)
+    palinprods = list(filter(lambda x: checkPalin(x), prods))
+
+    print(max(palinprods))
+
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file