Extract split method from loop

Author: jsca-kwok

data_structures/arrays/strings/almost_palindrome_checker.rb

@@ -25,10 +25,11 @@
 def almost_palindrome_checker(string)
   p1 = 0
   p2 = string.length - 1
+  array = string.split('')
 
   while p1 < p2
-    if string.split('')[p1] != string.split('')[p2]
-      return palindrome_checker(string, p1, p2 - 1) || palindrome_checker(string, p1 + 1, p2)
+    if array[p1] != array[p2]
+      return palindrome_checker(array, p1, p2 - 1) || palindrome_checker(array, p1 + 1, p2)
     end
     p1 += 1
     p2 -= 1
@@ -37,9 +38,9 @@ def almost_palindrome_checker(string)
   true
 end
 
-def palindrome_checker(string, p1, p2)
+def palindrome_checker(array, p1, p2)
   while p1 < p2
-    if string.split('')[p1] != string.split('')[p2]
+    if array[p1] != array[p2]
       return false
     end
     p1 += 1