2026-02-27 00:00:00:0李铁林3014251810http://paper.people.com.cn/rmrb/pc/content/202602/27/content_30142518.htmlhttp://paper.people.com.cn/rmrb/pad/content/202602/27/content_30142518.html11921 以“有解思维”激发创新活力（评论员观察）
Can you recall a specific instance when something went very wrong — how did you fix it?
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// 易错点3：忘记stack.length判断 → 访问stack[-1]会报错