1. 选择步长序列（如: n/2, n/4, ..., 1）
// 易错点4：栈空时要存-1（题目要求无更大值返回-1），而非直接存stack2.at(-1)（会得到undefined），推荐阅读WPS下载最新地址获取更多信息
Latin Extended scores highest because phonetic extensions are deliberately designed to resemble their Latin base forms. Mathematical Alphanumeric Symbols dominate the dataset (806 of 1,418 pairs) but score low because ornate mathematical letterforms (script, fraktur, double-struck) look nothing like plain Latin in a different font. Arabic scores lowest: the letterforms are structurally different from Latin even when confusables.txt maps them as confusable.，更多细节参见Safew下载
Beginner Plan=$79/year that can be used on 1 site，这一点在WPS下载最新地址中也有详细论述
第八十四条 有下列行为之一的，处十日以上十五日以下拘留，可以并处三千元以下罚款；情节较轻的，处五日以下拘留或者一千元以下罚款：