Log scale 1 %# some random data 2 x = 2.^(0:10); 3
y = rand(size(x)); 4 5 plot(log2(x), y) %# plot on log2 x-scale 6 se...
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其他好文 时间：
2014-05-12 15:54:18
阅读次数：
377
We consider permutations of the numbers 1,..., N
for some N. By permutation we mean a rearrangment of the
number 1,...,N. For example
2 4 5 1 7 6 3 8
is a permutation of 1,2,...,8. Of cours...
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其他好文 时间：
2014-05-04 18:38:14
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341
题目
Evaluate the value of an arithmetic expression in Reverse Polish Notation.
Valid operators are +, -, *, /.
Each operand may be an integer or another expression.
Some examples:
["2...
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其他好文 时间：
2014-05-04 18:34:44
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272
DDL ：Data Definition Language (DDL) statements
are used to define the database structure or schema. Some examples:CREATE - to
create objects in the da...
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数据库 时间：
2014-05-03 22:21:22
阅读次数：
410
题目：
Given a string S and a string T, count the number of distinct subsequences of T in S.
A subsequence of a string is a new string which is formed from the original string by deleting some (c...
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其他好文 时间：
2014-05-03 21:48:19
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252
题目链接：
http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=5176
Simple Equation
Time Limit: 2 Seconds Memory Limit: 65536 KB
There are many Equations. Some are difficu...
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其他好文 时间：
2014-05-03 17:47:01
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343
题目
Reverse digits of an integer.
Example1: x = 123, return 321
Example2: x = -123, return -321
Have you thought about this?
Here are some good questions to ask before coding. Bonus points...
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其他好文 时间：
2014-05-03 17:35:30
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345
Chef wrote some text on a piece of paper and now he wants to know how many holes are in the text. What is a hole? If you think of the paper as the plane and a letter as a curve on the plane, then each...
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其他好文 时间：
2014-05-03 15:49:18
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412
Shaass has decided to hunt some birds. There are n horizontal electricity wires aligned parallel to each other. Wires are numbered 1 to n from
top to bottom. On each wire there are some oskols sitti...
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其他好文 时间：
2014-05-02 20:48:26
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462
1.U3D经常莫名奇妙崩溃。一般是由于空异常造成的，多多检查自己的引用是否空指针。2.编码切换警告提示。警告提示：Some
are Mac OS X (UNIX) and some are Windows.This might lead to incorrect line
numbers in st...
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其他好文 时间：
2014-05-02 14:27:11
阅读次数：
752
