Solution {
static var names: [Int] = []
}
- The
names
variable is defined as a static property in the Solution class. - Static properties are shared among all instances of the class and can be accessed and modified from multiple threads concurrently.
- Since there is no synchronization mechanism in place, concurrent access to the names array can lead to data races and inconsistent results.
- If multiple threads attempt to modify the names array simultaneously, it can result in unexpected behaviour, such as incorrect or incomplete modifications, data corruption, or crashes.
- To ensure thread safety, concurrent access to the names array should be synchronized using appropriate mechanisms like locks, serial queues, or other synchronization primitives.
- Adding synchronization mechanisms will ensure that only one thread can access or modify the names array at a time, preventing data races and ensuring consistent behaviour.
Solution should be like below π
class Solution {
private static var names: [Int] = []
private static let queue = DispatchQueue(label: "com.example.solution-queue")
static func updateNames(_ name: Int) {
queue.async {
names.append(name)
}
}
}
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