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比如现在01234567890ABCDEFGHJKLMNOPQRSTUVWXYZ去除了字母I和O,现在要随机生成6位长度的随机字符串,想请教一下这个随机的数量是多少呢?


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可重复的情况
34 * 34 * 34 * 34 * 34 * 34 = 1544804416

不可重复的情况
34 * 33 * 32 * 31 * 30 * 29 = 968330880


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
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Welcome to ShenZhenJia Knowledge Sharing Community for programmer and developer-Open, Learning and Share
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