30分プログラム、その82。エロと風俗情報満載 どう抜く？よりアレイのuniq。 irb(main):001:0> xs = [3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5, 8, 9, 7, 9] => [3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5, 8, 9, 7, 9] irb(main):002:0> xs.uniq => [3, 1, 4, 5, 9, 2, 6, …