Colored diff view showing how files changed over time (unified, full-context, and raw modes)
// ⚠️ 易错点3：此处返回n而非0（完全有序无需排序，长度为0）
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As always, we welcome reader submissions, and if you don't want to miss an issue, please subscribe using the box below (the form will not appear on AMP-enabled versions of the site). Each report will include information on small-, medium-, and heavy-lift rockets as well as a quick look ahead at the next three launches on the calendar.
candidate[n] = closest colour to goal