Question

即时学习swift atm和switch语句是迄今为止最棘手的部分。

以下代码可以简单地计算数组中的每个投票数，我希望它由交换机（！）完成。

我的问题：

为什么游乐场会永远运行？（重启几次）
是重要的导入基础吗？（该行不是我的代码）

我更感兴趣的是它为什么不起作用以及它是如何工作的，而不是真正在正确的代码中。我很高兴，但任何帮助！

    import UIKit
enum SchoolMascotOption {
    case salamander, marmot, neither
}
import Foundation
let mascotVotes: [SchoolMascotOption] = [.neither, .marmot, .salamander, .neither, .marmot, .neither, .neither, .marmot, .neither, .salamander, .salamander, .marmot, .neither, .neither, .salamander, .neither, .neither, .marmot, .salamander, .neither, .neither, .neither, .marmot, .marmot, .neither, .neither, .marmot, .salamander, .neither, .marmot, .marmot, .marmot, .marmot, .neither, .salamander, .salamander, .salamander, .salamander, .salamander, .salamander, .salamander, .marmot, .neither, .salamander, .salamander, .neither, .salamander, .neither, .salamander, .salamander, .salamander, .salamander, .salamander, .salamander, .marmot, .neither, .neither, .marmot, .salamander, .neither, .neither, .salamander, .salamander, .neither, .salamander, .salamander, .salamander, .salamander, .neither, .salamander, .neither, .salamander, .marmot, .salamander, .marmot, .salamander, .salamander, .marmot, .salamander, .neither, .marmot, .marmot, .marmot, .salamander, .marmot, .salamander, .marmot, .neither, .marmot, .neither, .salamander, .marmot, .marmot, .marmot, .neither, .marmot, .marmot, .salamander, .neither, .neither, .salamander, .neither, .neither, .marmot, .neither, .salamander, .salamander, .salamander, .neither, .neither, .salamander, .salamander, .salamander, .marmot, .salamander, .salamander, .marmot, .salamander, .neither, .marmot, .marmot, .neither, .neither, .salamander, .marmot, .neither, .marmot, .salamander, .salamander, .marmot, .salamander, .neither, .salamander, .marmot, .neither, .salamander, .marmot, .marmot, .salamander, .marmot, .salamander, .marmot, .salamander, .salamander, .marmot, .marmot, .neither, .marmot, .neither, .marmot, .salamander, .salamander, .salamander, .neither, .salamander, .salamander, .neither, .marmot, .neither, .marmot, .marmot, .marmot, .marmot, .neither, .marmot, .neither, .salamander, .marmot, .salamander, .neither, .salamander, .salamander, .marmot, .neither, .marmot, .neither, .salamander, .neither, .salamander, .neither, .neither, .marmot, .salamander, .neither, .marmot, .salamander, .marmot, .neither, .salamander, .neither, .neither, .salamander, .salamander, .salamander, .neither, .salamander, .neither, .marmot, .salamander, .marmot]

var salamanderCounts = 0
var marmotCounts = 0
var neitherCounts = 0

for vote in mascotVotes {

    switch vote {
    case .salamander :
        salamanderCounts += 1
    case .marmot :
        marmotCounts += 1
    case .neither :
        neitherCounts += 1
    }
}
print(salamanderCounts)
print(marmotCounts)
print(neitherCounts)

screenshot

谢谢你们的帮助!!!

Answer 1

我想，在操场上跑步不会因为阵列的大小而闪电般快。

当import Foundation import UIKit包括UIKit时{p> Foundation是多余的（尽管在这个游乐场中不需要任何人）。

尝试将所有代码从操场中删除，等待操场不要说“正在运行”或类似的东西，然后将其粘贴回来。

如果这不能解决问题，请尝试将数组长五个元素，以确保长度不是问题。

祝你好运！

切换到快速编译但永远运行

1 个答案: