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dinhhuydh/ruby_exercise_4.rb

Created December 11, 2017 22:58
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ruby_exercise_4.rb
# 1 Print square of number from 1 to n
# eg1: squares(3) => [1, 4, 9]
# 2: Print all numbers with 3 digits have two '1' digits like 112, 131
# 3. Calculate sum of digits in the numbers
# eg1: [12, 4, 154] => [3, 4, 10]
# 4. Transform a number to simple word of digits
# eg1: 12 => one two
# eg2: 498 => four nine eight
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