From 60f8f489e8be47a40f334e1a87a03af96c2d8114 Mon Sep 17 00:00:00 2001
From: Natan7 <natan.ribeiro@ccc.ufcg.edu.br>
Date: Mon, 2 Oct 2023 02:00:25 -0300
Subject: [PATCH] Power implementation (any positive numbers)

---
 maths/power.rb | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 maths/power.rb

diff --git a/maths/power.rb b/maths/power.rb
new file mode 100644
index 00000000..cb332295
--- /dev/null
+++ b/maths/power.rb
@@ -0,0 +1,27 @@
+def power (number = 0, n = 1)
+  if number < 0 || n <0
+    return -1
+  end
+
+  if n == 0
+    return 1
+  elsif ((n%2)==0)
+    return power(number*number, n/2)
+  else
+    return number*power(number*number, n/2)
+  end
+
+end
+
+# Take a number and the exponent value from the user as input and output the the result of expression (number^n)
+print("Enter a positive integer value (base):")
+number = gets.chomp.to_i
+print("Now, enter a positive integer value (exponent):")
+n = gets.chomp.to_i
+
+result = power(number, n)
+if(result==-1)
+  puts "Sorry, Invalid Number! Negative number informed."
+else
+  print("The result of " + number.to_s + "^" + n.to_s + " is "+ result.to_s + "\n")
+end