我有一个数组：
line = ["0;\t0\n", "1;\t0\n", "2;\t0\n", "3;\t0\n", "4;\t0\n", "5;\t0\n", "6;\t0\n", "7;\t0\n", "8;\t0\n", "9;\t0\n", "10;\t0\n", "11;\t0\n", "12;\t0\n", "13;\t0\n", "14;\t0\n", "15;\t0\n", "16;\t0\n", "17;\t0\n", "18;\t0\n", "19;\t0\n", "20;\t0\n", "21;\t4,8\n", "22;\t9,5\n", "23;\t13,8\n", "24;\t18,5"]
我想提取分号后面的值。是否可以提取值（0、0、0、...、4、8、9、5、13、6 等）？我该怎么做？我试过：
sa=line.split(";")
sa1=sa[1].delete "\n"
sa1=sa1.delete "\t"
sa1=sa1.to_i
$sa1 = sa1
当我显示$sa1时，我只看到18,5。
这很容易：
str = ["0;\t0\n", "1;\t0\n", "2;\t0\n", "3;\t0\n", "4;\t0\n", "5;\t0\n", "6;\t0\n", "7;\t0\n", "8;\t0\n", "9;\t0\n", "10;\t0\n", "11;\t0\n", "12;\t0\n", "13;\t0\n", "14;\t0\n", "15;\t0\n", "16;\t0\n", "17;\t0\n", "18;\t0\n", "19;\t0\n", "20;\t0\n", "21;\t4,8\n", "22;\t9,5\n", "23;\t13,8\n", "24;\t18,5"]
p str.map{|el| el.split(/;\t/)[1].chomp}
结果：
# ["0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "4,8", "9,5", "13,8", "18,5"]
a=["0;\t0\n", "1;\t0\n", "2;\t0\n"]
p a.map{|i| i[0..i.index(';')-1]}
#>> ["0", "1", "2"]
a=["0;\t0\n", "1;\t0\n", "2;\t12\n"]
p a.map{|i| i[i.index("\t")+1..-1].chomp}
# >> ["0", "0", "12"]
Sting#[]
line.map{|s| s[/;\s*(\S+)/, 1]}
# => ["0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "4,8", "9,5", "13,8", "18,5"]