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homework 1 #757

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4291ccd
changed the names of variables
Snezhnyy Mar 3, 2018
74865cf
I hope it will work
Mar 27, 2018
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24 changes: 24 additions & 0 deletions 2018/AnatoliDobshikov/1/pascals_triangle.rb
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Original file line number Diff line number Diff line change
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# Program draws pascal's triangle with the specified depth in the console
# values input
print 'Input tree depth: '
tree_depth = gets.chomp.to_i
print 'Input base number: '
base_number = gets.chomp.to_i
# checking values
if tree_depth <= 0 || base_number <= 0
puts 'Invalid value. Try to type positive integer.'
exit
end
# tree create
NUM_LENGTH = 4 # the maximal length in the triangle
coef = [base_number]
console_cols = `/usr/bin/tput cols`.chomp.to_i - 4 # fix trailing blank line
spaces = ' ' * (tree_depth / NUM_LENGTH > 0 ? tree_depth / NUM_LENGTH : 1)
tree_depth.times do |level|
printf('%03d:', level)
puts coef.join(spaces).center(console_cols)
coef.push(0)
(level + 1).downto(1) do |column|
coef[column] += coef[column - 1]
end
end