From 93b4c2a215556153ed948260678cd8e840493b39 Mon Sep 17 00:00:00 2001
From: Charles Cabergs <me@cacharle.xyz>
Date: Fri, 18 Jun 2021 21:50:31 +0200
Subject: problem 3 4 5 6 6 in julia

---
 julia/004-largest_palindrome_product.jl | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 julia/004-largest_palindrome_product.jl

(limited to 'julia/004-largest_palindrome_product.jl')

diff --git a/julia/004-largest_palindrome_product.jl b/julia/004-largest_palindrome_product.jl
new file mode 100644
index 0000000..32be760
--- /dev/null
+++ b/julia/004-largest_palindrome_product.jl
@@ -0,0 +1,26 @@
+###
+# Largest palindrome product
+# Problem 4
+#
+# A palindromic number reads the same both ways. The largest palindrome made from the
+# product of two 2-digit numbers is 9009 = 91 × 99.
+# Find the largest palindrome made from the product of two 3-digit numbers.
+###
+
+function is_palindrom(n)
+    s = string(n)
+    s == reverse(s)
+end
+
+
+top = -1
+
+for x in 100:999
+    for y in 100:999
+        if is_palindrom(x * y)
+            global top = max(top, x * y)
+        end
+    end
+end
+
+println(top)
-- 
cgit