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RSS订阅原创 【Project Euler】【Problem 10】Summation of primes
Summation of primes Problem 10 The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17. Find the sum of all the primes below two million. Answer: 142913828922
2013-03-27 18:57:16
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原创 【Project Euler】【Problem 9】Special Pythagorean triplet
Special Pythagorean triplet Problem 9 A Pythagorean triplet is a set of three natural numbers, a b c, for which, a2 + b2 = c2 For example, 32 + 42 = 9 + 16 = 25 = 52. There exists exa
2013-03-27 18:50:58
659
原创 【Project Euler】【Problem 8】Largest product in a series
Largest product in a series Problem 8 Find the greatest product of five consecutive digits in the 1000-digit number. 73167176531330624919225119674426574742355349194934 96983520312774506326
2013-03-27 18:40:35
1173
原创 【Project Euler】【Problem 7】10001st prime
10001st prime Problem 7 By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13. What is the 10 001st prime number? Answ
2013-03-27 18:31:26
677
原创 【Project Euler】【Problem 6】Sum square difference
Sum square difference Problem 6 The sum of the squares of the first ten natural numbers is, 12 + 22 + ... + 102 = 385 The square of the sum of the first ten natural numbers is, (1 + 2 + .
2013-03-27 18:26:51
662
原创 【Project Euler】【Problem 5】Smallest multiple
Smallest multiple Problem 5 2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder. What is the smallest positive number that is evenly di
2013-03-26 19:55:50
681
原创 【Project Euler】【Problem 4】Largest palindrome product
Largest palindrome product Problem 4 A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 99. Find the largest pal
2013-03-26 19:41:59
628
原创 【Project Euler】【Problem 3】Largest prime factor
Largest prime factor Problem 3 The prime factors of 13195 are 5, 7, 13 and 29. What is the largest prime factor of the number 600851475143 ? Answer: 6857
2013-03-26 19:34:11
661
原创 【Project Euler】【Problem 2】Even Fibonacci numbers
Even Fibonacci numbers Problem 2 Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be: 1, 2, 3, 5, 8,
2013-03-26 18:48:41
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原创 【Project Euler】【Problem 1】Multiples of 3 and 5
Multiples of 3 and 5 Problem 1 If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23. Find the sum of all the mult
2013-03-26 18:31:56
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原创 Java知识思维导图
做了4年的j2se开发，觉得自己Java技术应该掌握的不错了，对Java的理解到了某个瓶颈了；一直在考虑着是不是要再深入学习另一面语言？对比起来才能有更深的理解？但是潜意识里又一直在提醒自己，这是浮躁，Java一门语言就够我玩很久了；一门语言没学明白就去学另一门，不够专注，最后会得不偿失的。 最后决定，把Java手册从头到尾细细的整理一遍，以确定自己Java究竟学到什么程度了。 Jav
2012-07-12 14:37:58
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原创 用Java山寨一款Flash游戏
原游戏地址：http://wanga.me/7279。。原游戏是用Flash做的 很早以前做了大概的功能。。前几天整理代码时发现。。就给做完整了。。。加了个关卡编辑器。。等我做好关卡编辑器后发现。。做一个关比完通一关难了无数倍。。。就想写个随即生成关卡的算法。。结果算了两个晚上。。蛋都算碎了。。算不出来 - -。。。诶。。把第一版的算法放在源码中了。。第一版算法是最低级的穷举法。。
2012-05-22 16:33:01
906
用Java山寨一款Flash游戏
原游戏地址：http://wanga.me/7279。。原游戏是用Flash做的 很早以前做了大概的功能。。前几天整理代码时发现。。就给做完整了。。。加了个关卡编辑器。。等我做好关卡编辑器后发现。。做一个关比完通一关难了无数倍。。。就想写个随即生成关卡的算法。。结果算了两个晚上。。蛋都算碎了。。算不出来 - -。。。诶。。把第一版的算法放在源码中了。。第一版算法是最低级的穷举法。。。地图大...
2012-05-19 22:39:13
188
山寨QQ游戏。。第一步。。登入界面。。
画了一个礼拜的晚上。。。就画出来一个登入界面。。。 上图。。。 画的挺像。。。 这个是游戏主界面目前进展 十一继续画。。。希望能完成。。时间太忙了。。。十一后打算换工作。。。还要花时间准备。。。 代码现在先不拿出来了。。。太丑。。。而且现在对整体的架构还在推敲中。。。...
2010-09-25 14:27:26
135
原创 Eclipse扩展点查询--Help Eclipse SDK英文原文(留个点以后好找)
http://help.eclipse.org/help32/index.jsp?topic=/org.eclipse.platform.doc.isv/reference/extension-points/org_eclipse_ui_decorators.html
2009-12-26 19:09:52
123
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