窃以为有条件的人家，皆应自觉于世风浇薄之际，努力带头隆厚风习礼俗，譬如春联，不见多精彩，但至少不应以粗鄙无文为得意、以言不及义为荣光。
// 3. 要求稳定排序: 归并排序
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This article originally appeared on Engadget at https://www.engadget.com/science/space/the-astronaut-whose-illness-forced-an-early-return-from-the-iss-was-mike-fincke-163752239.html?src=rss
Per-digit arithmetic — computing sum and carry for each pair