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一、题目描述 腾讯实习在线笔试的一道题目。 根据输入的数字(< 1000)，输出这样的"蛇形"矩阵，如下。输入n，输出（n * n）阶矩阵，满足由外到内依次增大。 如： 输入2，则输出如下矩阵 1 2 4 3 输入3，则输出如下矩阵 1 2 3 8 9 4 7 6 5 输入4，则输出如下矩阵 1 2 阅读全文
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1. Description The thief has found himself a new place for his thievery again. There is only one entrance to this area, called the "root." Besides the 阅读全文
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1. Description Given a list of unique words. Find all pairs of distinct indices (i, j) in the given list, so that the concatenation of the two words, 阅读全文
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1. Description Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1's in their binary repre 阅读全文