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DNA (Deoxyribonucleic Acid) is the molecule which contains the genetic instructions. It consists of four different nucleotides, namely Adenine, Thymin 阅读全文
posted @ 2021-01-30 21:14
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matlab的纯文本帮助命令有多种，help、lookfor、which、doc、get、type等 help命令 help命令用来查询一个函数的使用方式。 help fun %fun是函数名称 实例： lookfor命令 lookfor名利用来查询所有与要查询的关键词有关的M文件。 lookfor 阅读全文
posted @ 2021-01-30 20:47
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A crossword puzzle consists of a rectangular grid of black and white squares and two lists of definitions (or descriptions). One list of definitions i 阅读全文
posted @ 2021-01-30 20:44
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A character string is said to have period k if it can be formed by concatenating one or more repetitions of another string of length k. For example, 阅读全文
posted @ 2021-01-30 20:37
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A children’s puzzle that was popular 30 years ago consisted of a 5×5 frame which contained 24 small squares of equal size. A unique letter of the al 阅读全文
posted @ 2021-01-30 20:35
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An organic compound is any member of a large class of chemical compounds whose molecules contain carbon. The molar mass of an organic compound is th 阅读全文
posted @ 2021-01-30 20:33
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Trung is bored with his mathematics homeworks. He takes a piece of chalk and starts writing a sequence of consecutive integers starting with 1 to N 阅读全文
posted @ 2021-01-30 20:30
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Some DNA sequences exist in circular forms as in the following figure, which shows a circular sequence “CGAGTCAGCT”, that is, the last symbol “T” in 阅读全文
posted @ 2021-01-30 20:28
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A common typing error is to place the hands on the keyboard one row to the right of the correct position. So ‘Q’ is typed as ‘W’ and ‘J’ is typed as 阅读全文
posted @ 2021-01-30 20:27
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A regular palindrome is a string of numbers or letters that is the same forward as backward. For example, the string “ABCDEDCBA” is a palindrome bec 阅读全文
posted @ 2021-01-30 20:24
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For a positive integer N, the digit-sum of N is defined as the sum of N itself and its digits. When M is the digitsum of N, we call N a generator of 阅读全文
posted @ 2021-01-30 20:23
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TEX is a typesetting language developed by Donald Knuth. It takes source text together with a few typesetting instructions and produces, one hopes, 阅读全文
posted @ 2021-01-30 20:17
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There is an objective test result such as “OOXXOXXOOO”. An ‘O’ means a correct answer of a problem and an ‘X’ means a wrong answer. The score of eac 阅读全文
posted @ 2021-01-30 20:15
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@ 样式菜单功能 样式菜单功能主要是用来简化的重复性的文字标题格式处理工作，利用样式菜单里面的选项卡选择适合的样式对目标标题进行修改。样式菜单功能在开始菜单里面。 单行修改 1.单行修改标题只需要将光标放在标题的最后。 2.选择点击合适的标题样式。 多行标题修改 1.选中要修改的多行标题。 2.选择 阅读全文
posted @ 2021-01-30 20:13
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@(文档页眉页脚及变距) 页眉制作 进入页眉编辑区域 方法一：双击页眉区域 方法二：点击插入、找到页眉功能点击 2.选择合适的页眉款式 在页眉和页脚选项卡中进入点击页眉功能，在下拉菜单选择合适的款式。 3.编辑页眉文字 页脚制作 方法与页眉相同。 注意:不可以对页码进行键盘敲入，否则不会页码更新 。 阅读全文
posted @ 2021-01-30 20:12
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当前文价夹浏览器以及路径管理器 在主页面左侧有单独的窗口进行显示，可以显示当前目录下的文件并提供文件搜索功能。 搜索路径 搜索先后步骤 输入字符串“polyfit” （1）检查polyfit是不是MATLAB工作区内的变量名，如果不是，执行下一步。 （2）检查polyfit是不是一个内置函数，如果不 阅读全文
posted @ 2021-01-30 20:09
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matlab数值类型 数值类型的分类 整数类型 整数类型有8种、上面的数字为其内存大小，如：int8，整数所占内存大小为8个字节。除了int64 和 uint64不能进行数值运算之外都可以。 类型转换 在没有说明的情况下，系统默认的数据类型是双精度浮点型。对应的整数转换函数为对应的整数类型名 如：i 阅读全文
posted @ 2021-01-30 20:08
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matlab字符串操作 字符串创建 >> B='hello' B = 'hello' 字符串求长度 >> size(B) ans = 1 5 字符串检索 >> J=B(2:4) J = 'ell' 字符串单引号由两个连续的单引号表示 >> J='I''m winner' J = 'I'm winne 阅读全文
posted @ 2021-01-30 20:07
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matlab结构体、数组和单元数组类型的创建 @ matlab结构体类型 通过字段赋值创建结构体 创建格式： 结构体名称.字段名称 样例： >> student.name='Alan'; >> student.grade=6; >> student.subject={'Chinese','math' 阅读全文
posted @ 2021-01-30 20:06
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In “Hangman Judge,” you are to write a program that judges a series of Hangman games. For each game, the answer to the puzzle is given as well as the 阅读全文
posted @ 2021-01-30 20:05
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A research laboratory of a world-leading automobile company has received an order to create a special transmission mechanism, which allows for incredi 阅读全文
posted @ 2021-01-30 20:03
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Andy, 8, has a dream - he wants to produce his very own dictionary. This is not an easy task for him, as the number of words that he knows is, well, n 阅读全文
posted @ 2021-01-30 19:58
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Ugly numbers are numbers whose only prime factors are 2, 3 or 5. The sequence 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, ... shows the first 11 ugly numbers. 阅读全文
posted @ 2021-01-30 19:50
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