Update 0014_Problem_1.rb

Author: codereport

Diff for: 0014_Problem_1.rb

@@ -2,6 +2,7 @@
 # Problem Link (Contest):  https://leetcode.com/contest/leetcode-weekly-contest-14/problems/number-complement/
 # Problem Link (Practice): https://leetcode.com/problems/number-complement/
 
+# Solution 1
 def find_complement(num)
     return num.to_s(2)
               .chars
@@ -11,3 +12,12 @@ def find_complement(num)
               .map { |val, i| val * ( 2 ** i) }
               .sum
 end
+
+# Solution 2 (Better)
+def find_complement(num)
+    return num.to_s(2)
+              .chars
+              .map { |x| 1 - x.to_i }
+              .join
+              .to_i(2)
+end