Print rectangle with Ruby - ruby

Question

How to print rectangle like below using Ruby:
* = = = *
* = = = *
* * * * *
* = = = *
* = = = *
in this case, length of row and column are same and must odd.
Example:
r = rectangle(5)
should print :
* = = = *
* = = = *
* * * * *
* = = = *
* = = = *
and if :
r = rectangle(7)
should print:
* = = = = = *
* = = = = = *
* * * * * * *
* = = = = = *
* = = = = = *
* * * * * * *
* = = = = = *
Thanks in advance.

Answer 1

I'd start by creating the two lines: (there are plenty of ways to achieve this)
size = 7
a = Array.new(size, '*').fill('=', 1..-2).join(' ') #=> "* = = = = = *"
b = Array.new(size, '*').join(' ') #=> "* * * * * * *"
Then I'd define a repeating pattern:
pattern = [a, a, b].cycle
Finally, I'd print the pattern size times:
puts pattern.take(size)
* = = = = = *
* = = = = = *
* * * * * * *
* = = = = = *
* = = = = = *
* * * * * * *
* = = = = = *

Answer 2

[SOLVE BY ME] :D
def square(n)
begin
if n.odd?
1.upto(n) do | row |
if row % 3 != 0
puts "#{'*'} #{'= ' * (n - 2)}#{'*'}"
else
puts "#{'* ' * n}"
end
end
else
puts 'Must odd number!'
end
rescue
puts 'Must integer number!'
end
end
square(5)
Output:
* = = = *
* = = = *
* * * * *
* = = = *
* = = = *
square(7)
Output:
* = = = = = *
* = = = = = *
* * * * * * *
* = = = = = *
* = = = = = *
* * * * * * *
* = = = = = *
square(8)
Output:
Must odd number!
square(8.5)
Output:
Must integer number!
square('blabla')
Output:
Must integer number!

Answer 3

def rectangle(n)
puts("-----------------For #{n}--------------------")
if n % 2 == 1
for i in (1..n)
for j in (1..n)
if j == 1 || j == n || 0 == i % 3
print "* "
else
print "= "
end
end
print("\n")
end
end
end
rectangle(3)
rectangle(5)
rectangle(7)
rectangle(9)
rectangle(11)
-----------------For 3--------------------
* = *
* = *
* * *
-----------------For 5--------------------
* = = = *
* = = = *
* * * * *
* = = = *
* = = = *
-----------------For 7--------------------
* = = = = = *
* = = = = = *
* * * * * * *
* = = = = = *
* = = = = = *
* * * * * * *
* = = = = = *
-----------------For 9--------------------
* = = = = = = = *
* = = = = = = = *
* * * * * * * * *
* = = = = = = = *
* = = = = = = = *
* * * * * * * * *
* = = = = = = = *
* = = = = = = = *
* * * * * * * * *
-----------------For 11--------------------
* = = = = = = = = = *
* = = = = = = = = = *
* * * * * * * * * * *
* = = = = = = = = = *
* = = = = = = = = = *
* * * * * * * * * * *
* = = = = = = = = = *
* = = = = = = = = = *
* * * * * * * * * * *
* = = = = = = = = = *
* = = = = = = = = = *

Answer 4

Just for fun modify #spn answer
def rectangle(count)
return 'Must odd number more than 1' unless count.is_a?(Integer) && count.odd? && count > 1
Array.new(count) { |index| (index + 1) % 3 == 0 ?
"#{'* ' * count}".chomp(" ") :
"#{'*'} #{'= ' * (count - 2)}#{'*'}" }.join("\n")
end
And now
puts rectangle(2) # will print Must odd number more than 1
puts rectangle("asdf") # will print Must odd number more than 1
puts rectangle(9) # will print:
* = = = = = = = *
* = = = = = = = *
* * * * * * * * *
* = = = = = = = *
* = = = = = = = *
* * * * * * * * *
* = = = = = = = *
* = = = = = = = *
* * * * * * * * *
It's better to avoid puts in the methods. So you can use them again in web, telegrambots, etc. Also it's not good idea to duplicate Ruby exceptions by your own (but the same) messages.

Answer 5

Let's first define a method to construct the two types of lines.
def make_line(n, mid_char)
['*', *[mid_char]*(n-2), '*'].join(' ')
end
make_line(5, '*') #=> "* * * * *"
make_line(5, '#') #=> "* # # # *"
Now create a method to draw the lines in the desired pattern. The ith line (base zero) is comprised of stars and spaces only if (i+1) % 3 equals zero; else it is the line containing pound signs as well.
def draw(n)
all_stars = make_line(n, '*')
two_stars = make_line(n, '#')
n.times { |i| puts ((i+1) % 3).zero? ? all_stars : two_stars }
end
draw 5
* # # # *
* # # # *
* * * * *
* # # # *
* # # # *
draw 6
* # # # # *
* # # # # *
* * * * * *
* # # # # *
* # # # # *
* * * * * *
draw 7
* # # # # # *
* # # # # # *
* * * * * * *
* # # # # # *
* # # # # # *
* * * * * * *
* # # # # # *