Matrix67 博文
一页页翻很不方便,用了个简单的脚本抓了下来, 大神的文章有关nlp的内容相当精彩,推荐!!!
import urllib
import re
HOMEPAGE='http://www.matrix67.com/blog/'
def findTitle(page):
m = re.findall('<h1.*<a href="(.*)" rel="bookmark">(.*)</a>', page)
if m:
return m
else:
return
def findNextPage(page):
m = re.search('<a href=\"(.*)\".*>OLDER', page)
if m:
return m.group(1)
else:
return
def crawl(URL):
content = urllib.urlopen(URL).read()
for info in findTitle(content):
print info[0]
print info[1]
nextURL = findNextPage(content)
print nextURL
Crawl(nextURL)
Crawl(HOMEPAGE)
vim editor command
:g/^/+1m-1 #交换奇偶行
:g/^http/+1m-1
:%s/\(^.*\)\n\(^.*\)/\1 \2/g 合并奇偶数行
[在2048里能够得到的最大的数是多少? ] (http://www.matrix67.com/blog/archives/5941 )
[趣题:2014年INMO中的一个问题 ] (http://www.matrix67.com/blog/archives/5919 )
[多边形外角和等于 360° 的一种直观解释 ] (http://www.matrix67.com/blog/archives/5910 )
[趣题:用 k × 1 的矩形覆盖 n × n 的正方形棋盘 ] (http://www.matrix67.com/blog/archives/5900 )
[趣题:圆中的两个相切的半圆 ] (http://www.matrix67.com/blog/archives/5883 )
[杨辉三角中的自然底数 e ] (http://www.matrix67.com/blog/archives/5881 )
[保加利亚单人纸牌游戏 ] (http://www.matrix67.com/blog/archives/5865 )
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[趣题:Kontsevich的单人跳棋游戏 ] (http://www.matrix67.com/blog/archives/5546 )
[趣题:庄家的秘密序列 ] (http://www.matrix67.com/blog/archives/5523 )
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[趣题:把比萨分成若干等份使得至少有一份不含边 ] (http://www.matrix67.com/blog/archives/5495 )
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[趣题:斜边上的动点 ] (http://www.matrix67.com/blog/archives/5321 )
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[2月14日:送给你的礼物 ] (http://www.matrix67.com/blog/archives/5170 )
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[趣题:构造多边形使得过边界上某一点的任意直线均能等分面积 ] (http://www.matrix67.com/blog/archives/5004 )
[经典证明:几乎所有有理数都是无理数的无理数次方 ] (http://www.matrix67.com/blog/archives/4984 )
[趣题:把矩形分割为面积相同但形状各不相同的小矩形 ] (http://www.matrix67.com/blog/archives/4971 )
[趣题:八根并排放置的水管 ] (http://www.matrix67.com/blog/archives/4966 )
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[趣题:填写两个声母互相颠倒的词 ] (http://www.matrix67.com/blog/archives/4922 )
[2月14日:送给你的礼物 ] (http://www.matrix67.com/blog/archives/4911 )
[经典证明:星际争霸是NP-hard的 ] (http://www.matrix67.com/blog/archives/4897 )
[Fibonacci数列性质的组合证明 ] (http://www.matrix67.com/blog/archives/4891 )
[12个经典的行程问题 ] (http://www.matrix67.com/blog/archives/4881 )
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[趣题:这些词有什么共同点? ] (http://www.matrix67.com/blog/archives/4858 )
[趣题:用最少的点挡住所有可能的反射路径 ] (http://www.matrix67.com/blog/archives/4831 )
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[趣题:舞台里的狮子 ] (http://www.matrix67.com/blog/archives/4793 )
[2011年度最变态的迷宫难题 ] (http://www.matrix67.com/blog/archives/4790 )
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[汉字地图第二版 ] (http://www.matrix67.com/blog/archives/4769 )
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[经典证明:能否在平面上写下不可数个不相交的Y? ] (http://www.matrix67.com/blog/archives/4731 )
[如果对Heron公式求导的话 ] (http://www.matrix67.com/blog/archives/4722 )
[趣题:只用一把带有两条平行边的直尺作图 ] (http://www.matrix67.com/blog/archives/4717 )
[用抛物线筛选质数 ] (http://www.matrix67.com/blog/archives/4713 )
[UyHiP趣题:按照盒子的三边长之和来计费有没有漏洞? ] (http://www.matrix67.com/blog/archives/4698 )
[趣题:只允许加倍操作的水桶倒水问题 ] (http://www.matrix67.com/blog/archives/4690 )
[无聊小制作:“数词+非数词+数词+非数词”的出现频数 ] (http://www.matrix67.com/blog/archives/4675 )
[难倒犹太人的11个数学问题 ] (http://www.matrix67.com/blog/archives/4649 )
[趣题:从1到4000中各位数字之和能被4整除的有多少个? ] (http://www.matrix67.com/blog/archives/4644 )
[趣题:旋转桌子避免灯泡全亮 ] (http://www.matrix67.com/blog/archives/4631 )
[无聊小研究:各种文体中出现频率最高的四字词 ] (http://www.matrix67.com/blog/archives/4619 )
[千万别学数学:最折磨人的数学未解之谜(二) ] (http://www.matrix67.com/blog/archives/4603 )
[经典证明:Conway的士兵 ] (http://www.matrix67.com/blog/archives/4595 )
[趣题:2n位平衡01串平均有多少个平衡前缀? ] (http://www.matrix67.com/blog/archives/4592 )
[无聊小制作:电影的颜色 ] (http://www.matrix67.com/blog/archives/4581 )
[再谈Julia集与Mandelbrot集 ] (http://www.matrix67.com/blog/archives/4570 )
[最难的组合游戏:To Knot or Not to Knot ] (http://www.matrix67.com/blog/archives/4560 )
[八皇后问题算什么,来看看无穷皇后问题吧 ] (http://www.matrix67.com/blog/archives/4556 )
[又一种证明素数无穷多的方法 ] (http://www.matrix67.com/blog/archives/4548 )
[经典证明:等边三角形内一点到各顶点的距离长可构成一个三角形 ] (http://www.matrix67.com/blog/archives/4545 )
[生成函数的妙用:平均抛掷多少次硬币才会出现连续两个正面? ] (http://www.matrix67.com/blog/archives/4534 )
[趣题:能否在等边三角形点阵中画一个正方形? ] (http://www.matrix67.com/blog/archives/4525 )
[数学冷知识:不断取英文表达的字符数,最后总会得到数字4 ] (http://www.matrix67.com/blog/archives/4520 )
[IMO2011趣题:总存在一条将会遍历所有点的直线 ] (http://www.matrix67.com/blog/archives/4511 )
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[趣题:不用相似怎么办? ] (http://www.matrix67.com/blog/archives/4485 )
[盯着结论看,直到它变得显然成立为止 ] (http://www.matrix67.com/blog/archives/4480 )
[今天才知道,空壳星球的内部是没有重力的 ] (http://www.matrix67.com/blog/archives/4470 )
[趣题:连接多个数字串时怎样避免歧义? ] (http://www.matrix67.com/blog/archives/4459 )
[经典证明:Cantor集中的元素两两相加可以遍历 ] (http://www.matrix67.com/blog/archives/4453 )
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[视频:Steiner问题的肥皂膜解法 ] (http://www.matrix67.com/blog/archives/4418 )
[趣题:和为90度的一组锐角,正弦值之和一定大于1 ] (http://www.matrix67.com/blog/archives/4413 )
[史上最Geek的桌游:ERGO ] (http://www.matrix67.com/blog/archives/4400 )
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[趣题:老鼠与毒药问题的推广 ] (http://www.matrix67.com/blog/archives/4361 )
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[Kolakoski序列:我们知道的还是太少 ] (http://www.matrix67.com/blog/archives/4324 )
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[趣题:八等分一张圆饼最少需要多少刀? ] (http://www.matrix67.com/blog/archives/4306 )
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[UyHiP趣题:如果每个人都随大流,结果会怎样? ] (http://www.matrix67.com/blog/archives/4270 )
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[趣题:能否把三维空间分成无穷个圆? ] (http://www.matrix67.com/blog/archives/4248 )
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[数学家集体相,看你能认出多少大牛来 ] (http://www.matrix67.com/blog/archives/4236 )
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[Fitch悖论:我们已经掌握了所有的知识 ] (http://www.matrix67.com/blog/archives/4191 )
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[用正方形纸片折出等边三角形 ] (http://www.matrix67.com/blog/archives/4152 )
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[趣题:随机折断的木棒 ] (http://www.matrix67.com/blog/archives/4125 )
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[出租车几何学:一个全新的几何世界 ] (http://www.matrix67.com/blog/archives/4078 )
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[趣题:两步猜出多项式的各项系数 ] (http://www.matrix67.com/blog/archives/4064 )
[千万别学数学:最折磨人的数学未解之谜(一) ] (http://www.matrix67.com/blog/archives/4035 )
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[徒手画分形图形,此MM乃神人也! ] (http://www.matrix67.com/blog/archives/4000 )
[神秘常量复出!用0x077CB531计算末尾0的个数 ] (http://www.matrix67.com/blog/archives/3985 )
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[把几何定理画成油画 ] (http://www.matrix67.com/blog/archives/3970 )
[最帅的Menelaus定理证明方法 ] (http://www.matrix67.com/blog/archives/3965 )
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[趣题:平均要取到第几个随机数才会让序列第一次下降 ] (http://www.matrix67.com/blog/archives/3936 )
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[可能是数学公式最多的图了 ] (http://www.matrix67.com/blog/archives/3892 )
[《新知客》趣题专栏 2010.11 ] (http://www.matrix67.com/blog/archives/3895 )
[There is always a bigger fish ] (http://www.matrix67.com/blog/archives/3885 )
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[趣题:对全体正整数红蓝二着色使之不含单色无穷等差数列 ] (http://www.matrix67.com/blog/archives/1684 )
[经典证明:素数无穷多的拓扑学证明 ] (http://www.matrix67.com/blog/archives/1678 )
[一道智力题:世上最毒的毒药 ] (http://www.matrix67.com/blog/archives/1671 )
[(愚人节玩笑)史上最牛充分条件分析器测试版发布 ] (http://www.matrix67.com/blog/archives/1657 )
[趣题:制作一个可以循环播放的磁带 ] (http://www.matrix67.com/blog/archives/1650 )
[经典证明:几个利用概率法进行证明的例子 ] (http://www.matrix67.com/blog/archives/1629 )
[“周末不工作”周期函数 ] (http://www.matrix67.com/blog/archives/1625 )
[晒论文:表示重复意义的虚词比较 ] (http://www.matrix67.com/blog/archives/1611 )
[追Geek MM小工具:IOCCC情书生成器v0.1 ] (http://www.matrix67.com/blog/archives/1598 )
[Harvard-MIT Mathematics Tournament 2009: Guts Round ] (http://www.matrix67.com/blog/archives/1591 )
[分形生活之Koch雪花小蛋糕 ] (http://www.matrix67.com/blog/archives/1585 )
[从“迷失的8”到生成函数:小数展开的秘密 ] (http://www.matrix67.com/blog/archives/1574 )
[Happy pi day! 祝所有网友节日快乐 ] (http://www.matrix67.com/blog/archives/1569 )
[(组图)模式、分形与混沌:数学无处不在 ] (http://www.matrix67.com/blog/archives/1561 )
[趣题:用一副七巧板拼出带有三个洞的图形 ] (http://www.matrix67.com/blog/archives/1555 )
[实分析中的反例(上) ] (http://www.matrix67.com/blog/archives/1547 )
[数学小游戏:原创字谜几则 ] (http://www.matrix67.com/blog/archives/1541 )
[趣题:理想模型下的排序算法(下) ] (http://www.matrix67.com/blog/archives/1523 )
[史上最牛诗歌:一个停机问题不可判定的证明 ] (http://www.matrix67.com/blog/archives/1497 )
[趣题:扫雷定理 互补棋盘上的数字和相等 ] (http://www.matrix67.com/blog/archives/1493 )
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[随记:普遍性验证、数学思维、代数基本定理及其它 ] (http://www.matrix67.com/blog/archives/1466 )
[Cursor*10竟然出续集了! ] (http://www.matrix67.com/blog/archives/1460 )
[用布制成的“山寨Klein瓶” ] (http://www.matrix67.com/blog/archives/1452 )
[趣题:构造无穷长的字符串序列使每一项都不包含它前面的项 ] (http://www.matrix67.com/blog/archives/1438 )
[学了拓扑学,我猛然领悟到了儿时游戏的真谛…… ] (http://www.matrix67.com/blog/archives/1433 )
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[密码学协议举例(五):两个人能够在电话上打牌吗? ] (http://www.matrix67.com/blog/archives/1407 )
[经典证明:Chaitin定理 不可能编程判断代码的最简性 ] (http://www.matrix67.com/blog/archives/1392 )
[绝对是有史以来最酷的计算器! ] (http://www.matrix67.com/blog/archives/1386 )
[TLE比赛结束 经典题目回顾 ] (http://www.matrix67.com/blog/archives/1381 )
[迟到的情人节祝福 Sierpinski Valentine ] (http://www.matrix67.com/blog/archives/1377 )
[比比谁的代码短:TLE测试赛结束 ] (http://www.matrix67.com/blog/archives/1366 )
[密码学协议举例(四):秘密数字的比较 ] (http://www.matrix67.com/blog/archives/1362 )
[Alice and Bob ] (http://www.matrix67.com/blog/archives/1358 )
[拥有多个A的概率:又一个条件概率悖论 ] (http://www.matrix67.com/blog/archives/1344 )
[纸币的秘密:世界各国纸币上的统一记号 ] (http://www.matrix67.com/blog/archives/1337 )
[不同维度的对话:带你进入四维世界 ] (http://www.matrix67.com/blog/archives/1323 )
[这些序列都是自相似序列…… ] (http://www.matrix67.com/blog/archives/1312 )
[主观不可见 一个非常有创意的动作解谜Flash小游戏 ] (http://www.matrix67.com/blog/archives/1305 )
[关于0.9999….=1的证明 ] (http://www.matrix67.com/blog/archives/1301 )
[假如人类生活在1000维空间里…… ] (http://www.matrix67.com/blog/archives/1293 )
[密码学协议举例(三):另类的密钥交换协议 ] (http://www.matrix67.com/blog/archives/1289 )
[预告:几个有趣的编程比赛 ] (http://www.matrix67.com/blog/archives/1278 )
[刷屏新工具:史上最壮观的生命游戏构造图 ] (http://www.matrix67.com/blog/archives/1270 )
[密码学协议举例(二):秘密共享的门限方案 ] (http://www.matrix67.com/blog/archives/1261 )
[一个简单而有用的数据结构 ] (http://www.matrix67.com/blog/archives/1255 )
[趣题:在双向有序链表中查找指定的数 ] (http://www.matrix67.com/blog/archives/1241 )
[这个图形有什么牛B的地方? ] (http://www.matrix67.com/blog/archives/1233 )
[密码学协议举例(一):带有防欺骗的承诺 ] (http://www.matrix67.com/blog/archives/1230 )
[Mandelbrot the Fractal Bear 可爱的分形熊熊 ] (http://www.matrix67.com/blog/archives/1227 )
[趣题:理想模型下的排序算法(上) ] (http://www.matrix67.com/blog/archives/1209 )
[一个难看的证明和一个漂亮的证明 ] (http://www.matrix67.com/blog/archives/1201 )
[根号2是无理数的又一个精彩证明 ] (http://www.matrix67.com/blog/archives/1187 )
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[酷图分享:The Eye of i ] (http://www.matrix67.com/blog/archives/1177 )
[绝对牛B!由多联骨牌拼出的钟表盘面 ] (http://www.matrix67.com/blog/archives/1163 )
[趣题:匿名的消息广播 ] (http://www.matrix67.com/blog/archives/1160 )
[猜猜看这是什么地方? ] (http://www.matrix67.com/blog/archives/1153 )
[趣题:椭圆焦点到两切线交点的连线平分焦点对两切点的张角 ] (http://www.matrix67.com/blog/archives/1148 )
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[身份验证、中间人攻击和数字签名:浅谈密码学(中) ] (http://www.matrix67.com/blog/archives/1136 )
[据说可以用来测试智力的几张图片 ] (http://www.matrix67.com/blog/archives/1128 )
[身份验证、中间人攻击和数字签名:浅谈密码学(上) ] (http://www.matrix67.com/blog/archives/1120 )
[强大的遗传算法:用50个半透明多边形重现蒙娜丽莎 ] (http://www.matrix67.com/blog/archives/1113 )
[Möbius版Hex游戏:第一个以Möbius环为棋盘的游戏 ] (http://www.matrix67.com/blog/archives/1107 )
[最牛的图纸:Escher网格 ] (http://www.matrix67.com/blog/archives/1103 )
[征税到底亏了谁?简单数学背后的经济学原理 ] (http://www.matrix67.com/blog/archives/1094 )
[趣题:用正则表达式判断一个二进制数是否能被3整除 ] (http://www.matrix67.com/blog/archives/1089 )
[八卦的学问:实现所有人消息共享最少需要多少通电话? ] (http://www.matrix67.com/blog/archives/1078 )
[漫话二分(下) ] (http://www.matrix67.com/blog/archives/1057 )
[睡觉也不歇息…… ] (http://www.matrix67.com/blog/archives/1066 )
[讲个故事:Saw V中的死亡谜题 ] (http://www.matrix67.com/blog/archives/1053 )
[假如宇宙是有界的…… ] (http://www.matrix67.com/blog/archives/1037 )
[无限长的金属杆:理想模型带来的悖论 ] (http://www.matrix67.com/blog/archives/1035 )
[Steffen可活动多面体 ] (http://www.matrix67.com/blog/archives/1029 )
[漫话二分(上) ] (http://www.matrix67.com/blog/archives/1013 )
[经典证明:不用数学归纳法直接推导平面图的Euler公式 ] (http://www.matrix67.com/blog/archives/1006 )
[趣题:完全图K_n最少可以拆成多少个完全二分图? ] (http://www.matrix67.com/blog/archives/998 )
[UyHiP趣题:(√2 +√3)^1948小数点后第48位是多少? ] (http://www.matrix67.com/blog/archives/996 )
[World of Goo与Sierpinski三角形 ] (http://www.matrix67.com/blog/archives/989 )
[构造函数使得任意小的区间所对应的值域都是整个实数域 ] (http://www.matrix67.com/blog/archives/978 )
[号外:物理构建类解谜游戏World of Goo下载 ] (http://www.matrix67.com/blog/archives/973 )
[《从一到无穷大》选谈:思维的尺度 ] (http://www.matrix67.com/blog/archives/959 )
[趣题:用最少的“并行交换”完成排序 ] (http://www.matrix67.com/blog/archives/954 )
[趣题:只用赋值、自增和循环操作实现减法运算 ] (http://www.matrix67.com/blog/archives/944 )
[统计数据、相关性与因果关系 ] (http://www.matrix67.com/blog/archives/930 )
[趣闻:世界上最大的数是多少? ] (http://www.matrix67.com/blog/archives/925 )
[Typography Art: Mathematical Induction ] (http://www.matrix67.com/blog/archives/920 )
[趣题:如何用集合来定义有序对 ] (http://www.matrix67.com/blog/archives/910 )
[停机问题、Chaitin常数与万能证明方法 ] (http://www.matrix67.com/blog/archives/901 )
[经典证明:环面上的七色定理 ] (http://www.matrix67.com/blog/archives/890 )
[随机洗牌:哪一种算法是正确的? ] (http://www.matrix67.com/blog/archives/879 )
[Original Ideas ] (http://www.matrix67.com/blog/archives/866 )
[趣题:用最少的块移动实现逆序操作 ] (http://www.matrix67.com/blog/archives/858 )
[为什么平分圆面积的所有曲线中以直径最短? ] (http://www.matrix67.com/blog/archives/853 )
[Code Golf:比比谁写的代码最短 ] (http://www.matrix67.com/blog/archives/848 )
[Count Like a Mathematician ] (http://www.matrix67.com/blog/archives/846 )
[寻求真心话大冒险之猜数游戏的最佳策略 ] (http://www.matrix67.com/blog/archives/844 )
[用计算机自动作曲?Wolfram的手机铃声生成算法 ] (http://www.matrix67.com/blog/archives/835 )
[趣题:尽可能用奇数次猜测完成猜数游戏 ] (http://www.matrix67.com/blog/archives/830 )
[趣题:用位运算生成下一个含有k个1的二进制数 ] (http://www.matrix67.com/blog/archives/813 )
[Light-Bot:一个编程启蒙游戏 ] (http://www.matrix67.com/blog/archives/810 )
[趣题:奇怪的有向图 任两点间两步之内可达的路径有且仅有一条 ] (http://www.matrix67.com/blog/archives/801 )
[经典证明:一个数论定理的组合学证明 ] (http://www.matrix67.com/blog/archives/796 )
[八皇后加强版:每个皇后最多攻击一个其它的皇后 ] (http://www.matrix67.com/blog/archives/789 )
[Oh 一层一层 一层一层 一层一层 又一层层的Klein瓶 ] (http://www.matrix67.com/blog/archives/785 )
[数学思维游戏两则:Gabriel喇叭、世界末日论 ] (http://www.matrix67.com/blog/archives/773 )
[最酷的证明:Pick定理另类证法 ] (http://www.matrix67.com/blog/archives/768 )
[趣题:2n+1个点中任n个都与同一点相连,则存在一个连接所有点的点 ] (http://www.matrix67.com/blog/archives/751 )
[趣题:循环赛中总存在一人“可传递一次”地打败了所有人 ] (http://www.matrix67.com/blog/archives/746 )
[荒唐的一幕 ] (http://www.matrix67.com/blog/archives/754 )
[趣题:奇怪的自然数集划分 ] (http://www.matrix67.com/blog/archives/733 )
[思考的乐趣:UyHiP趣题之用最少的块移动实现逆序操作 ] (http://www.matrix67.com/blog/archives/730 )
[牛!各种变态的数独谜题 ] (http://www.matrix67.com/blog/archives/725 )
[是否存在只在一点连续的函数? ] (http://www.matrix67.com/blog/archives/720 )
[一个与矩形剖分有关的命题(五):数学归纳法 ] (http://www.matrix67.com/blog/archives/718 )
[iHologram:利用手机水平感应功能打造惊人3D效果 ] (http://www.matrix67.com/blog/archives/706 )
[“解答和题目一样长”:更多的一句话证明 ] (http://www.matrix67.com/blog/archives/701 )
[趣题:构造一个[0,1]到(0,1)的一一映射 ] (http://www.matrix67.com/blog/archives/698 )
[Usain Bolt and the Curve Fitting Method ] (http://www.matrix67.com/blog/archives/696 )
[错觉动画:旋转的网格 ] (http://www.matrix67.com/blog/archives/691 )
[Al Zimmermann编程大赛已经开始 ] (http://www.matrix67.com/blog/archives/687 )
[经典证明:Prüfer编码与Cayley公式 ] (http://www.matrix67.com/blog/archives/682 )
[趣题:三角形中的六点共圆 ] (http://www.matrix67.com/blog/archives/677 )
[双向Josephus问题中的分形图形 ] (http://www.matrix67.com/blog/archives/666 )
[一些新的视频处理技术 ] (http://www.matrix67.com/blog/archives/661 )
[海盗分金问题的扩展:当N>200时 ] (http://www.matrix67.com/blog/archives/655 )
[Mathway:对付数学作业的新武器 ] (http://www.matrix67.com/blog/archives/653 )
[七点共圆:一个美妙的结论 ] (http://www.matrix67.com/blog/archives/650 )
[L: Change the WorLd中的数学题 ] (http://www.matrix67.com/blog/archives/646 )
[艰苦奋斗,自力更生,和过去的自己团结起来! ] (http://www.matrix67.com/blog/archives/644 )
[趣题:最小的可覆盖所有12种五联骨牌的图形 ] (http://www.matrix67.com/blog/archives/638 )
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[O3 ·7 ·5 ·5 ·4 ·7 ·6 ·6 ·7 ·? ] (http://www.matrix67.com/blog/archives/610 )
[一个不属于我的节日 ] (http://www.matrix67.com/blog/archives/608 )
[不可能几何体与分形图形 ] (http://www.matrix67.com/blog/archives/605 )
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[一个与矩形剖分有关的命题(四):简便的数论证明 ] (http://www.matrix67.com/blog/archives/598 )
[Geek的悲哀 ] (http://www.matrix67.com/blog/archives/596 )
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[视频:用多米诺骨牌来解释逻辑门 ] (http://www.matrix67.com/blog/archives/569 )
[一个与矩形剖分有关的命题(二):直观的图论证明 ] (http://www.matrix67.com/blog/archives/564 )
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[csdn上的一个数学猜想 ] (http://www.matrix67.com/blog/archives/561 )
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[趣题:不用除法,如何求n个数的最小公倍数 ] (http://www.matrix67.com/blog/archives/554 )
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[视频推荐:Dimensions – A walk through mathematics ] (http://www.matrix67.com/blog/archives/551 )
[Valentine’s Day Maze 情人节迷宫 ] (http://www.matrix67.com/blog/archives/550 )
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[趣题:不断将各数替换为右侧比其小的数的个数,数列终将不再变化 ] (http://www.matrix67.com/blog/archives/548 )
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[趣题:构造1到n-1的排列使得前缀和模n仍为一个排列 ] (http://www.matrix67.com/blog/archives/532 )
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[趣题:直尺不够长时如何作出连接两点的直线? ] (http://www.matrix67.com/blog/archives/528 )
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[Google Treasure Hunt 2008开始啦! ] (http://www.matrix67.com/blog/archives/525 )
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