# 回数が分かっている繰り返し�@
10.times {
	print( "やっほ〜 " )
	puts( "     Yee-ha! " )
}

# 回数が分かっている繰り返し�A
10.times { |i|
	print( i , "回目のこんにちは\n" )
}

10.times { |i|
  print( i+1 , "回目のこんにちは\n" )
}

# 回数が分かっている繰り返し�A'
total = 0
10.times { |i|
  total += i
}
print( "合計は" , total )

# 回数が分かっている繰り返し�A''
total = 0
10.times { |i|
  total += i+1
}
print( "合計は" , total )

# 回数が分かっている繰り返し�B
10.times{ |i|
	print( 10 ** i , "\n" )
}

10.times{ |i|
	print( 10 ** (i+1) , "\n" )
}


10.times{ |i|
	print( 10 ** i , "\n" )
    break if i == 5
}

# 回数が分かっている繰り返し�C
10.times {|i| print i; puts "番目"}

10.times {|i| puts( "#{i} 番目" ) }

10.times {|j| puts "*"*j}


# 回数が分かっている繰り返し�D
n=5
n.times {|k| print( " "*(10-k), "*"*k, "\n" ) }

# 回数が分かっている繰り返し�E
n=10
n.times {|k| print( " "*(10-k), "*", "\n" ) }

n=10
n.times {|k| print( " "*(10-k), "*", " "*k*2 , "*" , "\n" ) }

# each�B
(3..5).each{ |i|
	print( i , "\n" )
}

(1..4).each{ |i|
	print( i*2+1 , "\n" )
}

# each�B
a=3
b=5
(a..b).each{ |i|
	print( i , "\n" )
}

a=1
b=4
(a..b).each{ |i|
	print( i*2+1 , "\n" )
}


# each�C
(-3..3).each{ |i|
	print( i , "\n" )
}

(3..-3).each{ |i|
	print( i , "\n" )
}


# 変数範囲が決まっている繰り返し�@
(0..9).each{ |i|
	print( 10 ** i , "\n" )
}

# 変数範囲が決まっている繰り返し�A
(5..10).each {|i| 
  print( i )
  if i%2==0 then 
    print( " は偶数" ) 
  else 
    print( " は奇数" ) 
  end
  print( "\n" )
}

# 変数範囲が決まっている繰り返し�B
n=gets.chomp.to_i
m=gets.chomp.to_i
total=0
(n..m).each { |i|
	total += i
}
print( n , "から" , m , "までの合計は" , total )

# 変数範囲が決まっている繰り返し�D
(-10..10).each{ |i|
	print( i , " " , i**2 , "\n" )
}

(10..-10).each{ |i|
	print( i , " " , i**2 , "\n" )
}

# 刻み幅に小数値を使用したい場合
11.times{ |i|
	print( i / 10.0 , " " , (i/10.0)**2.0 , "\n" )
}

(0..10).each{ |i|
	print( i / 10.0 , " " , (i/10.0)**2.0 , "\n" )
}

(0..100).each{ |i|
	x = i.to_f / 100
	print( x, " " ,  x**2.0 , "\n" )
}

(0..20).each{ |i|
	print( i / 2.0 , " " , (i/2.0)**2.0 , "\n" )
}

(0..40).each{ |i|
	print( i / 4.0 , " " , (i/4.0)**2.0 , "\n" )
}


# 擬似乱数�A
30.times {
  if rand() > 0.5 then
    print( "1" )
  else
    print( "0" )
  end
}

30.times { print rand(2) }

30.times {
  print( if rand() > 0.5 then "1" else "0" end )
}

# 擬似乱数�B
s = 0
loop{
	s = rand(6)+1
	print( s , "\n" )
	break if s == 6	
}

# 擬似乱数�C
5.times{
	s = rand(21)-10
	print( s , "\n" )
}

# 擬似乱数�D
5.times{
	s = rand(10)/10.0
	print( s , "\n" )
}

# 擬似乱数を用いた例�@
total = 0
5.times{
	x = rand(100)
	print( x , "\n" )
	total += x
}
print( " 合計は" , total )

# 擬似乱数を用いた例�A
max = 0
5.times{
	x = rand(100)
	print( x , "\n" )
	if max < x then
		max = x
	end
}
print( " 最大値は" , max )

# 擬似乱数を用いた例�B
min = 999
5.times{
	x = rand(100)
	print( x , "\n" )
	if min > x then
		min = x
	end
}
print( " 最小値は" , min )

# 擬似乱数を用いた例�C
a = 0
b = 0
10000.times{
	x = rand(2)
	if x == 0 then
		a += 1
	else
		b += 1
	end
}
print( " 0の出現回数 " , a , "回\n" )
print( " 1の出現回数 " , b , "回\n" )

# 擬似乱数を用いた例�D
ans=rand(100)

loop{
	print( "数字を入力して下さい\n" )
	input = gets.chomp.to_i	

	if ans == input then
		print( "正解\n" )
		break
	elsif input > ans then
		print( "正解はその値よりも小さい\n" )
	else
		print( "正解はその値よりも大きい\n" )
	end
}