Display all numbers between 1 to 1000 whose sum of digits is 7

sum_of_digits_is_7.rb

#This program produces the expected result in less number of iteration. 

x=*(0...100)
x.each do |y|
	str=y.to_s
	removed_last_digit=str[0..-1]
	s=removed_last_digit.split('').collect(&:to_i).reduce(:+)
	if s<=7
		diff=7-s
		number=str.to_s+diff.to_s
		puts number
	end
end	


=begin
Output as follows

07
16
25
34
43
52
61
70
106
115
124
133
142
151
160
205
214
223
232
241
250
304
313
322
331
340
403
412
421
430
502
511
520
601
610
700

=end