for i in range(1,10): for j in range(1,i+1): print
(" ".join(["%d*%d=%d" %(j,i,i*j)]))[root@miller qinbin]# python test.py
1*1=11*2=2 2*2=41*3=3 2...
分类:
编程语言 时间:
2014-05-26 20:34:16
阅读次数:
388
Given a collection of candidate numbers (C) and
a target number (T), find all unique combinations inCwhere the candidate numbers
sums toT.Each number ...
分类:
其他好文 时间:
2014-05-26 13:59:59
阅读次数:
237
Problem 1: Multiples of 3 and 5
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 multip...
分类:
其他好文 时间:
2014-05-23 01:43:01
阅读次数:
253
【题目】
Given a collection of numbers, return all possible permutations.
For example,
[1,2,3] have the following permutations:
[1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2], and [3,2,1].
【题意】
给定一个数组,生成所有的全排列
【思路】
递归,类DFS...
分类:
其他好文 时间:
2014-05-23 01:08:26
阅读次数:
194
Problem 2: Even Fibonacci numbers
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,...
分类:
其他好文 时间:
2014-05-22 23:29:44
阅读次数:
435
马上要去比赛了。
今天做了一下2014北京邀请赛,出了两道题目,感觉很水啊、、、
首先H题:
H. Happy Reversal
Time Limit: 1000ms
Case Time Limit: 1000ms
Memory Limit: 65536KB
64-bit integer IO format: %lld Java class name...
分类:
其他好文 时间:
2014-05-22 23:07:32
阅读次数:
417
Jimmy writes down the decimal representations of all natural numbers between and including m and n, (m ≤ n). How many zeroes will he write down?
Input
Input starts with an integer T (≤ 11000), denot...
分类:
其他好文 时间:
2014-05-22 22:59:18
阅读次数:
354
Problem 4: Largest palindrome product
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...
分类:
其他好文 时间:
2014-05-22 18:48:46
阅读次数:
355
【题目】
Given a collection of numbers that might contain duplicates, return all possible unique permutations.
For example,
[1,1,2] have the following unique permutations:
[1,1,2], [1,2,1], and [2,1,1].
【题意】
给定一个候选数集合,候选集中可能存在重复数,返回所有的排列
【思路】
...
分类:
其他好文 时间:
2014-05-22 17:32:17
阅读次数:
247
Linux系统通过软限制和硬限制,制约了打开文件的最大个数,而且每个端口侦听的连接数受限于/etc/sytctl.conf中的ip_local_port_range的范围,那么nginx是如何做到轻量级和高并发的。
Nginx的进程模型
各个work进程间通过accept_mutex互斥锁进行连接的获取,以防止惊群现象的发生(即所有进程都收到通知,却...
分类:
其他好文 时间:
2014-05-22 17:11:39
阅读次数:
364