def array_at(x)
  string_array = $small_string_array.dup
  fixnum_array = $small_fixnum_array.dup

  x.report "#at(0) with string" do
    100000.times do
      string_array.at(0)
    end
  end

  x.report "#at(size / 2) with string" do
    middle = string_array.size / 2
    100000.times do
      string_array.at(middle)
    end
  end

  x.report "#at(-1) with string" do
    100000.times do
      string_array.at(-1)
    end
  end

  x.report "#at(0) with fixnum" do
    100000.times do
      fixnum_array.at(0)
    end
  end

  x.report "#at(size / 2) with fixnum" do
    middle = fixnum_array.size / 2
    100000.times do
      fixnum_array.at(middle)
    end
  end

  x.report "#at(-1) with fixnum" do
    100000.times do
      fixnum_array.at(-1)
    end
  end
end

$small_string_array = [
  "qeBC6HSLzlc1", "Kh5I7Lwi8VXx", "e22wAAKw75vS", "CEMJiXl3AowP", "J1LC5Offt8Ho", "arSQUdbOuE0D", 
  "VGEZnh1akOv6", "vZ7J50xgVi0s", "QWFR1XMJmBwA", "p0ubHERwLxHN", "g6mApz6W1SGJ", "JHUKWJjCxDSJ", 
  "mCTHnaJ1naZ0", "mOueb0OO1XMN", "OT3G6j2RE2Uo", "U5Z1t2PAvsyB", "XCYAYQn6znBa", "kEiGV2xfvyUq", 
  "SZlOmOC3C0Xs", "zmOc5KEp4C7p", "HkHkqmzKojCf", "XJOaEe0I1Vh4", "fyoeml3mCcJH", "z2N3EmJ7bDmt", 
  "XUQPEz0oYcyE", "soJgu8eTPgwB", "Eumlo8lLeu3l", "Yn533aM4tHb8", "Fo2VOQ32mSVK", "uZLVK0iERhWD", 
  "FoOxiw2TJDhI", "dh31roTWboBy", "qD6e0MzDSV4l", "vI74OAdOl0m1", "sAHaXD4xqPSV", "XkNJmcUsH4hp", 
  "cZj7BBiMidLg", "j6iay7E0IGya", "pHdhMOOnRIKK", "WdXBWPdGPcXx", "jWxiIuiKqlnN", "zGdpvKYDMtoV", 
  "jB0yCIkT7GUJ", "EzDS85c21PEc", "OaEQbxnaO4RC", "zN7XvRItFM61", "pQd2QATuA3ir", "0HFnFpPOJfNZ", 
  "hPjYccwBuTIq", "3aD6xbjgT0HZ", "tDT22JWXTo47", "dR0yKYdmvowi", "GrrfvXjTWs1i", "60UG6CQ3ewkf", 
  "eK86xZkqUYxa", "BVH7t2HMZHs5", "bQSTGVFNcsEO", "4vwbkoAl1E6S", "yHTkZL3dpanc", "dvt7dY1Z4Sbp", 
  "RrfFYuSyUagu", "oeIgfnLsdfj6", "oWqZ4mhfuVbK", "WttPzRy5oZ00", "BuIFWSc3KKeP", "GQYtH3wH2fQk", 
  "4bARLyv8tjjY", "DqP11xDYrWBg", "FUHjSeQ4ENHb", "kWgIRA2xMAPA", "YZkZlZj6QvBk", "eSy33KnKzO8m", 
  "ThdI4A7TF7Hi", "yCoAxzfbCYle", "YMMEEuxjdF74", "5SUmSExJJhF5", "MXvem5vIyjeT", "OKjmkl1jj406", 
  "Zlns3bgponkT", "buoAovP3ANPc", "ZdxogpNKy7Pz", "Cvnh3FCvyhAY", "xJIpV38mKpxR", "GxIAYZgwchCK", 
  "SoBVY1QtDkRR", "XfJKrN4lpcZ1", "hMvVOuei8Ufj", "lzb3iV8Ptc4x", "yuLikeu1IURU", "7mTUejcUdg40", 
  "QRaQCGo1qgpc", "7q1f8dJT6QWB", "gEjsj618rGm7", "lYZ3bdrZQz6b", "BbfOiADJFFDq", "NxB7Q83ZHtxv", 
  "oDwOkPtH2gbF", "htru2aWcjeSM", "pkYicysGcakp", "rd3dJb7wmSEc", "EiH7wTZ5R2D3", "T5TDaVmQczD7", 
  "0fMmB4S5CFKg", "akiqIjqyFpc4", "faMWVXRLZdfB", "8lrqBOogZjZo", "YmvvoPK0W7FB", "xuNuQzn7JlsL", 
  "yNy4MDN2Pz0U", "rf2yiyN76h3U", "VyDEGPg4jCnA", "OzxAI2eafLW7", "NCAwpWJiZ542", "f0v35dFjuaql", 
  "UK5oyuPzuq6j", "mnGG556DkHNP", "OKtUWhPskxfd", "eLWX6iOImHLQ", "gJ1H7vLnnFKH", "fU22QNRDdh8A", 
  "bpqZjYXRVhs4", "R6fgGTZHKRU8", "8JumbHaoOVA5", "RMoZoYC3bapq", "zrdfpg2ZFD01", "JwVZEKmtYCNN", 
  "pYOtKITtOYNW", "PrIJQ8UAImtf", "MFRF3D5EphmD", "whoorxVWT0By", "4TZRGOy0aeCy", "S8R8rijxCAw6", 
  "udq0BOtc7LbZ", "6PlNGn4FUUjs", "gF2Z58HukZ4H", "YhkLDYIBT4Vr", "bGAohJ1Exr8x", "1qxnFFQKOjP6", 
  "mji4WLC1jylI", "YLwBEjNondGJ", "siiavOGaAAPZ", "iAcC1fDNc5OR", "O7rynaBEdQw8", "pqWeB0gcOs2g", 
  "kAgwoK58ZicJ", "Kgj1aEVHJuUO", "B6SkecopszvH", "EK8syDXpitAW", "W51EhYxDZsew", "tLhqnsQdXqND", 
  "2LGoDOdI6CWH", "DWibM1ee21d7", "sqCaFzy3zScp", "xfZx33fNkwKV", "d6sCg0xhLbof", "K8k1stb2c1SX", 
  "YXxYq41GYkGl", "oekE5AuKdoS0", "XbhIPt0wSAnw", "Qx5PIzSgzGqp", "o8HvII6keSj3", "j186tPfI0ebB", 
  "2DPUoQ01kq5E", "YqKodpEGOIN8", "iyXF8kbF1nrc", "dIT1FGy5uRiI", "rj3zCPGG5Wna", "LEiW2ifgFIl2", 
  "yVACYsYHW5UF", "jnI7wkX4PQjO", "hR7vk3TCOPcV", "uDm0g0LSe8Dn", "NISqprTVGqET", "oeHpk7mzxNQG", 
  "tmmmG3qZgita", "3TcRnbJfp5ZH", "uiIeXUXNn2ZH", "0F60dFET46Yc", "tbHU7jgLqFvp", "bmFawiHAerwY", 
  "DPcGnpAMfpw6", "zSUICp0ugDAy", "ivz1nCRCockM", "bXzdeSgeUSW4", "pairIrJINaOa", "2IZuPFbtNm6U", 
  "VcYf0bvySao5", "EVYTaVzZgDFp", "q6sCKWk8VRaF", "6aMsLRYEWZzV", "e4REx5YNFtM6", "GDZfrNT6qiFm", 
  "LS206O3WhENJ", "G7NhC0HsL3ls", "rxZuGDqZ4AtJ", "I7bQ44vYVfte", "430UrIsWWaab", "YRdSHkiTZ3J5", 
  "TwHNShpObHYQ", "dxSg4PcH71nU"
]
  
$small_fixnum_array = [
  347728297, 257683256, 578779314, 392222695, 408671424, 407970558, 812392640, 816577924, 115257099, 
  402351457, 792522571, 606803822, 544610941, 723197253, 426547220, 377445492, 822826294, 682892744, 
  554096615, 542755221, 671837237, 509647919, 851534465, 531024099, 709946972, 481735433, 353969015, 
  519648235, 48427274, 566510110, 192470787, 186886313, 902069737, 846031560, 60030853, 996261845, 
  633276290, 741573403, 457077568, 682268665, 775392729, 573619278, 720876370, 677808891, 61991492, 
  498306563, 379779184, 779798017, 549224675, 377051494, 332812925, 798908732, 860781792, 381312114, 
  611819871, 423272825, 437549428, 8583378, 968936714, 625238473, 170338972, 966017819, 846845654, 
  450588194, 876472524, 121332332, 52221083, 588840590, 443806208, 182695508, 87430824, 80349243, 
  168931148, 255018784, 614600618, 784669231, 31995577, 483869088, 601121162, 130624564, 371319233, 
  550379186, 921804880, 117261360, 536209011, 505027125, 925273209, 834351781, 68839499, 618168295, 
  19601458, 721476668, 209831873, 798446038, 417591480, 206124449, 302995390, 838939624, 420506939, 
  878585956, 324854622, 44063929, 536980406, 800909707, 340776410, 372732203, 57183324, 868804015, 
  642740517, 641789914, 732025573, 707843533, 334851271, 380888787, 809950344, 633968328, 385791579, 
  433957520, 374915776, 483882124, 609878969, 973251819, 185134734, 936246013, 188017820, 206037484, 
  618628399, 954825565, 282314109, 579663281, 94430702, 285707298, 847558107, 662169967, 96864252, 
  703915052, 789330467, 920098884, 851546773, 368055593, 822263587, 237490391, 629517804, 815061007, 
  302694980, 746130432, 247275243, 35232798, 781776777, 164086432, 272455893, 576173824, 375638276, 
  879718803, 310449906, 543657952, 23791806, 629934269, 129019767, 185106383, 221210724, 903426714, 
  325339586, 40343767, 495793257, 120958499, 840109377, 243617847, 965701164, 862627708, 453274628, 
  311310597, 730024775, 840524609, 760383311, 639044961, 391749908, 828147647, 285190947, 436797772, 
  45390801, 567254794, 453918915, 931881042, 624913131, 725521291, 505447917, 954878069, 360223958, 
  561638441, 25174779, 896656975, 419617963, 585784003, 637738870, 177657713, 921982818, 490418216, 
  736209263, 253028878
]