// const spanner = new StockSpanner();
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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.
Source: Computational Materials Science, Volume 266。业内人士推荐heLLoword翻译官方下载作为进阶阅读
// 易错点1：边界处理 - 0辆车返回0，1辆车返回1（无需后续计算）