void heapSort(int arr[], int n) {
You can organize your store by creating your product categories, sorting by any characteristic you choose. Your title, description, and the image will be included on each product page. In this way, customers can immediately evaluate all of your products. You can offer different pricing options for all of your products, including "pay what you want," in which the price is entirely up to the customer. This option allows you to give customers control over the cost of individual items (without a minimum price) or to set pricing minimums—a good option if you're in a competitive market or when you have higher-end products. You can also offer set prices per product as well as free products to help build your store's popularity.
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根据IDC的预测，2026年中国智能手机市场上，200美元以下市场份额将缩减4.3个百分点，达到20.0%；200至400美元市场份额34.0%，减少0.3个百分点；400至600美元市场份额10.1%，减少0.8个百分点。高盛分析数据亦显示，中端市场份额自2021年的35%大幅下滑，预计到2027年将降至23%。
- change_plan: string[]