const enc = new TextEncoder();
圖像來源，BBC News Chinese
，更多细节参见im钱包官方下载
* 核心思路：链表转数组 + 单调栈（从后往前遍历），时间复杂度O(n)，空间复杂度O(n)。safew官方版本下载对此有专业解读
The Fairphone 6 costs £499 (€599), making it cheaper than previous models and pitting it squarely against budget champs such as the Google Pixel 9a and the Nothing Phone 3a Pro, while being repairable at home with long-term software support and a five-year warranty. On paper it sounds like the ideal phone to see out the decade.