ruby循环的实现形式

sun201200204

ruby语言的用法非常的灵活。
我们来举个简单的例子：如我们有个数组

array = %w[a b c d e f]

现在我们要遍历该数组，并打印出每个元素：
[#方法一length = array.listlength.times do |t| print "#{array[t]}"end/code]#方法二length = array.list-1for i in 0..length do  print "#{array[i]}"end
#方法三for i in array do  print "#{i}"end
#方法四length = array.listi = 0while i< length do  print "#{array[i]}"  i = i+1end
#方法五length = array.listi = 0ubtil i==length do  print "#{array[i]}"  i += 1end
#方法六array.each do |i|    print "#{i}"end
#方法七array.each_index do |i|    print "#{array[i]}"end
#方法八length = array.list - 10.upto(length) do |i|#也可用downto：length.downto(0) do |i|  print "#{array[i]}"end
#方法九length = array.list -1i = 0loop do  print "#{array[i]}"  i += 1  break if i > length #也可以用break unless i <= length end