编辑代码

var dictStudents:[Int:String] = [:]
dictStudents.updateValue("程瀚游",forKey:2020967016)
dictStudents.updateValue("王金玉",forKey:2020967007)
dictStudents.updateValue("吴长豪",forKey:2020967020)
dictStudents.updateValue("徐杨",forKey:2020967015)
dictStudents.updateValue("邹徐陈",forKey:2020967017)
print(dictStudents)
var arrayNumbers = [Int](dictStudents.keys)
arrayNumbers.shuffle()
print(arrayNumbers)
for i in arrayNumbers{
  if let temp = dictStudents[i]{
  print(i,temp)
  }
}
var str = ""
if  arrayNumbers[0] == 2020967016{
    str = "该你回答问题罗！" 
}else{
    str = "还没轮到你，耐心等待哟。"
}
print(str)
switch arrayNumbers[0] == 2020967016{
case true:
  str = "该你回答问题罗！"
  default:
  str = "还没轮到你，耐心等待哟。"
}
print(str)
arrayNumbers[0] == 2020967016 ? 
print("该你回答问题罗！") : print("还没轮到你，耐心等待哟。")