Readd decimal_part() and leading_zero_number() returning strings

doc/default/number.md

@@ -3,7 +3,7 @@
 ```ruby
 # Required parameter: digits
 # Produces a number of the specified digits where the leading digit is never 0
-Faker::Number.number(10) #=> "1968353479"
+Faker::Number.number(10) #=> 1968353479
 
 # Required parameter: digits
 # Produces a number of the specified digits with a leading zero
@@ -15,10 +15,10 @@ Faker::Number.decimal_part(2) #=> "09"
 
 # Required parameter: l_digits
 # Produces a number with 2 digits leading and trailing the decimal
-Faker::Number.decimal(2) #=> "11.88"
+Faker::Number.decimal(2) #=> 11.88
 
 # Specify different values for leading and trailing digits
-Faker::Number.decimal(2, 3) #=> "18.843"
+Faker::Number.decimal(3, 3) #=> 181.843
 
 # Required parameters: mean, standard_deviation
 Faker::Number.normal(50, 3.5) #=> 47.14669604069156
@@ -38,7 +38,7 @@ Faker::Number.positive #=> 235.59238499107653
 
 Faker::Number.negative #=> -4480.042585669558
 
-Faker::Number.non_zero_digit #=> "8"
+Faker::Number.non_zero_digit #=> 8
 
-Faker::Number.digit #=> "1"
+Faker::Number.digit #=> 1
 ```

lib/faker/default/number.rb

@@ -11,6 +11,19 @@ def number(digits = 10)
         ([non_zero_digit] + generate(digits - 1)).join.to_i
       end
 
+      def leading_zero_number(digits = 10)
+        '0' + (2..digits).collect { digit }.join
+      end
+
+      def decimal_part(digits = 10)
+        num = ''
+        if digits > 1
+          num = non_zero_digit
+          digits -= 1
+        end
+        leading_zero_number(digits) + num
+      end
+
       def decimal(l_digits = 5, r_digits = 2)
         l_d = number(l_digits).to_s
         r_d = if r_digits == 1