quickSortRecursive(arr, low, pivotIdx - 1); // 排序左半部分
Real image compression (JPEG, PNG) uses different techniques (DCT, entropy coding), but quadtrees capture the same principle: spend your bits where the detail is, not uniformly across the whole image.
，这一点在safew官方版本下载中也有详细论述
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"These are objects, but they all relate to people," Machin said. "It's all about the people who lived in these areas going back thousands of years and we can start writing the stories about their lives and what they can tell us."