这算是相当简单的任务，不少国产 AI 手机助手在一年前都已经攻克了这种场景。
int isSorted(int arr[], int n) {
。夫子对此有专业解读
When we visited the set on a recent freezing afternoon in Paju city, just north of Seoul, filming was moving at breakneck speed.
Now that we can build the tree, let's use it to search. Finding a specific point means starting at the root and asking: which child quadrant contains this coordinate? Then you recurse into that child and ask again. Each level of the tree cuts the search space by roughly three-quarters.
It also became one of the early examples of user interface design conventions such as badges, rating buttons, sharing and recommendation features which have largely become standard features across media platforms today.