Temprature Convertor, Guessing Game, ASCII Triangle, Multiplication Table, Reverse a String

gistfile1.rb

# ----------- Temprature Convertor -----------
puts "type 1 to convert from Celsius to Fahrenheit /n or type 2 to convert from Fahrenheit to Celsius"
scale_chosen = gets.chomp

def temp(arg)
	if arg == '1'
		puts "enter Celsius temprature"
		temprature = gets.chomp 
		f_temp = temprature.to_f * 9/5 + 32
		puts "#{temprature} degrees Celsius is #{f_temp.round(2)} degrees Fahrenheit"
	elsif arg == '2'
		puts "enter Fahrenheit temprature"
		temprature = gets.chomp
		c_temp = temprature.to_f * 5/9 + 32
		puts "#{temprature} degrees Fahrenheit is #{c_temp.round(2)} degrees Celsius"
	else 
		puts "sorry, i don't recognize that"
	end 
end 

temp(scale_chosen)

# ----------- Guessing Game -----------
puts "choose a number between 1 and 100"
guess = gets.chomp.to_i  
rand_num = Random.new.rand(1..100-1) 
puts rand_num

def numChecker(arg, r_n)
	while arg != r_n do 
		if arg < r_n 
			puts "guess higher than #{arg}"
			arg = gets.chomp.to_i
		elsif arg > r_n
			puts "guess lower than #{arg}"
			arg = gets.chomp.to_i
		  end
		end 
		puts "good guess, #{r_n} is correct"
	end 

numChecker(guess, rand_num)

# ----------- ASCCI Art -----------
puts "What character do you want to make the pyramid out of?"
character = gets.chomp

puts "How many rows of #{character}'s do you want?"
row_count = gets.chomp.to_i

counter = 1

for i in 1..row_count
    puts (character * counter).center(row_count*2)
    counter += 2
  end 

# ----------- FANCY TRIANGLE (that i found online) -----------
def sierpinski_triangle(n)
  triangle = ["*"]
  n.times do |i|
    sp = " " * (2**i)
    triangle = triangle.collect {|x| sp + x + sp} +
                triangle.collect {|x| x + " " + x}
  end
  triangle
end
 
puts sierpinski_triangle(4)

# ----------- Multiplication Table -----------
    #incomplete 
    
# ----------- Reverse a String -----------

def reverse_in_place

	puts "Enter your string"
	str = gets.chomp.to_s
	mid = str.length/2

		(0...mid).each do |index| #0..mid is a range - we are moving through a range of numbers 
		str[index], str[-index-1] = str[-index-1], str[index]  
		# -index is a negative index, meaning you begin from the end of the string and move left   
		# you must do a full swap for the change to stick, see next line A.  
			# A. Will change the array within our loop: str[0], str[-1] = str[-1], str[0]
			# B. Does not change array within loop: str[0] = str[-1]
		end
	
	puts str
end

reverse_in_place