摘要： The ZGC garbage collector is designed for low latency, using Region-based memory layout, concurrent mark-compact algorithms, and innovative techniques like colored pointers and multi-mapping. It dynamically manages memory with small, medium, and large pages, optimizing object placement. ZGC's colored pointers store metadata directly in references, reducing memory barriers and enabling efficient concurrent operations. Despite its 4TB memory limit and lack of generational collection, ZGC outperforms other collectors in latency, achieving sub-10ms pauses while maintaining high throughput.

摘要： This text analyzes the "Remove Sub-folders from the Filesystem" LeetCode problem and presents two solution approaches. Method 1 uses a Trie (prefix tree) data structure: define trie nodes, insert all files into the tree, then use DFS traversal to collect parent nodes. Method 2 uses sorting: sort files lexicographically, add the first file to results, then traverse remaining elements to check if each is a subfolder of the last added element. For the Trie approach, time complexity is O(nl) and space complexity is O(nl), where n is array length and l is average folder length. For the Sort approach, time complexity is O(nl⋅logn) due to sorting, and space complexity is O(l) for temporary string operations during prefix comparisons.

摘要： The problem involves balancing fruit costs between two baskets. If the total count of any fruit cost is odd, balancing is impossible. Excess fruits are listed and sorted. A greedy strategy pairs smallest and largest costs to minimize exchange costs, choosing between direct or indirect swaps based on cost efficiency. Time complexity is O(n log n) due to sorting.

摘要： 题目要求计算没有会议的天数。解决方法是先将会议按开始时间排序，然后比较后一个会议的开始时间和前一个会议的结束时间，以确定是否有重叠或连续。时间复杂度为O(n)，空间复杂度为O(1)。

摘要： The problem involves matching players with trainers by sorting two arrays and using a two-pointer technique. The solution has a time complexity of O(n log n) due to sorting and a space complexity of O(log n). It was completed in 7 minutes and 41 seconds.