Merge pull request neetcode-gh#1869 from saip7795/sp/plus-one

Create: 0066-plus-one.rb

Author: tahsintunan

ruby/0066-plus-one.rb

@@ -0,0 +1,22 @@
+def plus_one(digits)    
+    digits.reverse!
+    carry = 1
+    i = 0
+
+    while(carry ==1)
+        if (i<digits.length)
+            if (digits[i]==9)
+                digits[i]=0
+            else
+                digits[i] +=1
+                carry = 0
+            end
+        else
+            digits.append(1)
+            carry = 0
+        end
+        i+=1
+    end
+
+    return digits.reverse!
+end