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Last night, little erriyue had a horrible nightmare. He dreamed that he and his girl friend were trapped in a big maze separately. More terribly, ther 阅读全文
posted @ 2020-12-01 19:39
BlackSnow
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The twenty-first century is a biology-technology developing century. We know that a gene is made of DNA. The nucleotide bases from which DNA is built 阅读全文
posted @ 2020-11-30 19:34
BlackSnow
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The students of the HEU are maneuvering for their military training. The red army and the blue army are at war today. The blue army finds that Little 阅读全文
posted @ 2020-11-29 20:27
BlackSnow
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The students of the HEU are maneuvering for their military training. The red army and the blue army are at war today. The blue army finds that Little 阅读全文
posted @ 2020-11-28 23:11
BlackSnow
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题目小数部分的位数有限的小数被称为有限小数。例如0.123450.12345是有限小数，1/3，Π是无限小数。给你一个正整数n，请你判断1/n是否为有限小数，如果是输出"YES"，否则输出"NO"（不包含引号） 思路：当n为2的m次方或者是2和5的公倍数时，1/n就是有限小数；否则是无限小数。 #i 阅读全文
posted @ 2020-11-28 01:16
BlackSnow
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题目描述 现在你有NN堆硬币，每堆硬币中都有NN枚硬币。其中N-1N−1堆硬币中每枚硬币的重量都为1g1g，只有剩下的一堆硬币中每枚硬币的重量为2g2g，但你并不知道哪堆硬币中的硬币重量为2g2g。 你有一个能称任意重量的电子秤，在最优策略下，请问最多需要称多少次就能知道哪堆硬币中的硬币重量为2g2 阅读全文
posted @ 2020-11-28 01:12
BlackSnow
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题目描述 有一个长度且只包含大写字母的单词。我们在写作时不小心把它写错了，写错的单词与正确的单词中每种字母的个数相同，那么有多少种不同的写错的单词呢？ 输入描述: 输入一行字符串，长度 且只包含大写字母 输出描述: 输出一个整数，即答案 示例1 输入 复制 EYE 输出 复制 2 说明 写错的单词有 阅读全文
posted @ 2020-11-28 00:39
BlackSnow
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一个规则的实心十二面体，它的 20个顶点标出世界著名的20个城市，你从一个城市出发经过每个城市刚好一次后回到出发的城市。 Input前20行的第i行有3个数,表示与第i个城市相邻的3个城市.第20行以后每行有1个数m,m<=20,m>=1.m=0退出. Output输出从第m个城市出发经过每个城市1 阅读全文
posted @ 2020-11-25 20:22
BlackSnow
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The 15-puzzle has been around for over 100 years; even if you don't know it by that name, you've seen it. It is constructed with 15 sliding tiles, eac 阅读全文
posted @ 2020-11-23 19:22
BlackSnow
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《Journey to the West》(also 《Monkey》) is one of the Four Great Classical Novels of Chinese literature. It was written by Wu Cheng'en during the Ming Dy 阅读全文
posted @ 2020-11-21 20:17
BlackSnow
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