七周掌握七种编程语言：实践指南

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(Telephone Number Word Generator) Standard telephone keypads contain the digits 0 through 9. The numbers 2 through 9 each have three letters associated with them, as is indicated by the following table: Many people find it difficult to memorize phone numbers, so they use the correspondence between digits and letters to develop seven-letter words that correspond to their phone numbers. For example, a person whose telephone number is 686-2377 might use the correspondence indi- cated in the above table to develop the seven-letter word “NUMBERS.” Businesses frequently attempt to get telephone numbers that are easy for their clients to remember. If a business can advertise a simple word for its customers to dial, then no doubt the business will receive a few more calls. Each seven-letter word corresponds to exactly one seven-digit telephone number. The restaurant wishing to increase its take-home business could surely do so with the number 825-3688 (i.e., “TAKEOUT”). Each seven-digit phone number corresponds to many separate seven-letter words. Unfortunately, most of these represent unrecognizable juxtaposi- tions of letters. It’s possible, however, that the owner of a barber shop would be pleased to know that the shop’s telephone number, 424-7288, corresponds to “HAIRCUT.” A veterinarian with the phone number 738-2273 would be happy to know that the number corresponds to “PETCARE.” Write a program that, given a seven-digit number, writes to a file every possible seven-letter word corresponding to that number. There are 2187 (3 to the seventh power) such words. Avoid phone numbers with the digits 0 and 1.

Here's a Python program to generate all possible seven-letter words corresponding to a given seven-digit phone number: ```python import itertools # mapping of digits to letters digit_to_letter = { ...

利用 Huffman 树，实现文本的编码和译码。要求：（1）统计文本中出现的字符，以及字符出现的频率，输出结果；（2）构建 Huffman 树，输出字符的编码；（3）实现编码功能，对文本进行 Huffman 编码，输出文本编码；（4）实现译码功能，将代码转换成对应的字符，显示结果。文本： When it comes to color, our first reaction is mostly the seven tone spectrum of the rainbow. Color has a particularly important and prominent role in China in both the language and aesthetics. Some rarely used Chinese characters are assigned a specific color, and these figurative prototypes have developed into poetic images with the changing of the times.

（1）统计文本中出现的字符，以及字符出现的频率，输出结果：字符 a 出现了 28 次字符 b 出现了 1 次字符 c 出现了 10 次字符 d 出现了 5 次字符 e 出现了 19 次字符 f 出现了 4 次字符 g 出现了 3 次 ...

if (nodemap.containsKey(SoftWareInfoConstant.ZERO_SEVEN)|| nodemap.containsKey(SoftWareInfoConstant.ZERO_EIGHT))

这是一行Java代码，意思是：如果“nodemap”中包含键为“ZERO_SEVEN”或键为“ZERO_EIGHT”的元素，就执行下面的代码块。其中，”SoftWareInfoConstant.ZERO_SEVEN”和”SoftWareInfoConstant.ZERO_EIGHT”应该是...

Fatal error: Uncaught PDOException: could not find driver in D:\phpstudy_pro\WWW\php\seven\db\mypdo.php:14 Stack trace: #0 D:\phpstudy_pro\WWW\php\seven\db\mypdo.php(14): PDO->__construct(':host=;dbname=', NULL, NULL) #1 D:\phpstudy_pro\WWW\php\seven\db\ceshi.php(5): Mysqlpdo->__construct(NULL) #2 {main} thrown in D:\phpstudy_pro\WWW\php\seven\db\mypdo.php on line 14

这个错误提示表明你的PHP代码使用了PDO扩展连接数据库，但是在服务器上并没有安装对应的PDO数据库驱动程序。你需要确认你的服务器上安装了正确的PDO驱动程序。...如果你使用的是Linux系统，可以使用以下命令来检查是否...

const eight1:Seven=new Eight("sss", 0) eight1.d(); const seven1:Eight=new Seven("sss", 0) seven1.d();

首先，将一个 `Eight` 类型的实例赋值给 `seven1` 变量是错误的，因为 `Eight` 类型不能转换为 `Seven` 类型。应该将 `Seven` 类型的实例赋值给 `seven1` 变量。其次，`d()` 方法在 `Seven` 类中不存在，所以在调用 ...

小C不是很喜欢数字“7”。对于给定的一个正整数，小 C 对能被 7 整除的正整数，或者它的十进制表示法中某一位上的数字为 7，则称其为与 7 相关的数。现求所有小于等于n的与7无关的正整数的和。输入格式从文件 seven.in 中读取数据。输入为一行,正整数n。输出格式输出到文件 seven.out 中。输出一行，包含一个整数，即小于等于n的所有与7无关的正整数的和。输入输出样列输入样例1： 21 输出样例1： 172 说明【数据范围】 n <=10000

小 C 不喜欢数字“7”，所以需要求出所有小于等于 n 的与 7 无关的正整数的和。这些数可以被表示为不能被 7 整除，并且十进制...例如，假设输入文件 seven.in 中包含数字 21，则输出文件 seven.out 应包含数字 172。

POOR_IN2000901UV.xsd文件在哪下载或查看

POOR_IN2000901UV.xsd 文件是 HL7 国际医疗标准组织（Health Level Seven International）中定义的一个 XML Schema 文件，用于定义 HL7 格式的消息。您可以在 HL7 官网上找到相关的文档和资源：https://www.hl7.org/...

module automation_lab_ex3_tb(); reg clk; reg rst_n; reg [2:0] frq_sel; wire [7:0] seven_segement_led; wire [3:0] seven_segement_led_sel; reg right; reg [8:0] cnt; reg [3:0] seven_segement_led_sel_r; automation_lab_ex3 u1( .clk (clk), .rst_n (rst_n), .frq_sel (frq_sel), .seven_segement_led (seven_segement_led), .seven_segement_led_sel (seven_segement_led_sel) ); initial begin clk = 0; rst_n = 0; frq_sel = 0; cnt = 0; right = 1'd0; #10 rst_n = 1; #50 frq_sel = 3'b100; #2684354560 frq_sel = 3'b010; #2621440 frq_sel = 3'b001; #2550 rst_n = 0; right = (cnt == 11); #2550 if(right) $display("ex3_right"); else $display("ex3_error"); #108435456 $stop; end always #5 clk = ~clk; always @(posedge clk) begin seven_segement_led_sel_r <= seven_segement_led_sel; if(seven_segement_led_sel == 0) cnt <= cnt; else if(seven_segement_led_sel == {seven_segement_led_sel_r[0],seven_segement_led_sel_r[3:1]}) cnt <= cnt + 1; else cnt <= cnt; end endmodule

该模块包含了一个时钟信号clk、复位信号rst_n、频率选择信号frq_sel、七段数码管显示信号seven_segement_led和七段数码管选择信号seven_segement_led_sel。模块中还定义了一些寄存器和连线，如right、cnt和seven_...

python调用7z.dll

seven_zip = ctypes.WinDLL("7z.dll") # 定义函数参数和返回值类型 seven_zip.SevenZipGetLibraryVersion.argtypes = [] seven_zip.SevenZipGetLibraryVersion.restype = ctypes.c_char_p # 调用...

module automation_lab_ex3( input clk, input rst_n, input [2:0] frq_sel, output [7:0] seven_segement_led, output [3:0] seven_segement_led_sel ); //code here localparam FRE26 = 3'b100; localparam FRE16 = 3'b010; localparam FRE6 = 3'b001; reg [7:0] key1_in; reg [3:0] led_sel; reg [28:0] cnt; reg [28:0] cnt_top; always @(*) begin case(frq_sel) FRE26: cnt_top = 28'b0100_0000_0000_0000_0000_0000_0000; FRE16: cnt_top = 28'b0100_0000_0000_0000_00; FRE6: cnt_top = 28'b0100_0000; default: cnt_top = 28'b0100_0000_0000_0000_0000_0000_0000; endcase end always @(posedge clk, negedge rst_n)begin if(!rst_n) begin cnt <= 28'b0; led_sel=4'b0001; end else if(cnt <= cnt_top) cnt <= cnt + 1'b1; else begin cnt <= 28'b0; case(led_sel) 4'b1000: begin led_sel <= 4'b0100; key1_in <= 8'b1100_0010; end 4'b0100: begin led_sel <= 4'b0010; key1_in <= 8'b1100_0011; end 4'b0010: begin led_sel <= 4'b0001; key1_in <= 8'b1100_0100; end 4'b0001: begin led_sel <= 4'b1000; key1_in <= 8'b1100_0001; end default: begin led_sel <= 4'b1000; key1_in <= 8'b1100_0001; end endcase end end assign seven_segement_led_sel = led_sel; automation_lab_ex1 instance1( .mode (4'b1000), .key1_in (key1_in), .led_out (), .seven_segement_led (seven_segement_led), .seven_segement_led_select () ) ; endmodule

- `key1_in`：按键输入的寄存器（8位） - `led_sel`：数码管选择的寄存器（4位） - `cnt`和`cnt_top`：计数器和计数器上限的寄存器（28位）然后，在一个组合逻辑块中，根据`frq_sel`的值，设置计数器上限`cnt_top`...

二十一：用英文单词模拟数学计算读入两个小于100的正整数A和B，计算A+B。需要注意的是：A和B的每一位数字由对应的英文单词给出。具体的输入输出格式规定如下：输入格式：测试输入包含若干测试用例，每个测试用例占一行，格式为 "A + B = "，相邻两字符串有一个空格间隔。当A和B同时为zero时输入结束，相应的结果不要输出。输出格式：对每个测试用例输出1行，即A+B的值。输入样例： one + two = three four + five six = zero seven + eight nine = zero + zero = 输出样例： three nine zero nine six编程

'five': 5, 'six': 6, 'seven': 7, 'eight': 8, 'nine': 9 } # 读入测试用例 while True: line = input().strip() # 去掉空格 if line == 'zero + zero =': # 输入结束 break a, b = line.split(' + ') # 分离 ...

起标题，每个标题50字以上，与传奇3，超高爆率，复古怀旧，元素觉醒，七大元素，十三魔法，神舰跑船，三端互通，原汁原味，经典玩法，经典三职业，需要30份不同的标题

4. "The Ultimate Quest: Masters of Seven Elements in a Stunning World" 5. "Magic Unleashed: Thirteen Spells to Conquer Major3's Mysterious Lands" 6. "Rule the Skies: Epic Battles on the Godly ...

书写一个python程序，不能报7后者不能含7

def no_seven(number): """ 判断一个数是否包含数字 7 或者是 7 的倍数 """ return number % 7 == 0 or '7' in str(number) def generate_numbers(n): """ 生成 1 到 n 之间不含数字 7 的数 """ numbers =...

A^X mod PIt's easy for ACMer to calculate A^X mod P. Now given seven integers n, A, K, a, b, m, P, and a function f(x) which defined as following.f(x) = K, x = 1f(x) = (a*f(x-1) + b)%m , x > 1Now, Your task is to calculate( A^(f(1)) + A^(f(2)) + A^(f(3)) + ...... + A^(f(n)) ) modular P.输入In the first line there is an integer T (1 < T <= 40), which indicates the number of test cases, and then T test cases follow. A test case contains seven integers n, A, K, a, b, m, P in one line.1 <= n <= 10^60 <= A, K, a, b <= 10^91 <= m, P <= 10^9输出For each case, the output format is “Case #c: ans”.c is the case number start from 1.ans is the answer of this problem.

for x in range(2, n+1): f[x] = (a*f[x-1] + b) % m # 计算表达式的结果 result = 0 for x in range(1, n+1): result += pow(A, f[x], P) # 对结果取模并输出答案 ans = result % P return ans # 处理...

用python写三个子程序，分别实现如下功能：（1）实现用户输入用户名和密码，当用户名为 seven且密码为123时，显示登陆成功,否则登陆失败！ 2）实现用户输入用户名和密码，当用户名为 seven且密码为123时，显示登陆成功，否则登陆失败，失败时允许重复输入三次。（3）实现用户输入用户名和密码，当用户名为seven或alex且密码为123时，显示登陆成功，否则登陆失败，失败时允许重复输入三次

if username == "seven" and password == "123": print("登陆成功！") else: print("登陆失败！") ``` （2）实现用户输入用户名和密码，当用户名为 seven 且密码为 123 时，显示登陆成功，否则登陆失败，失败时...

优化这段代码：clear all; close all; ncoeff = 12; %MFCC参数阶数 N = 10; %10个数字 fs=16000; %采样频率 duration2 = 2; %录音时长 k = 3; %训练样本的人数 speech = audiorecorder(fs,16,1); disp('Press any key to start 2 seconds of speech recording...'); pause disp('Recording speech...'); recordblocking(speech,duration2) % duration*fs 为采样点数 speechIn=getaudiodata(speech); disp('Finished recording.'); disp('System is trying to recognize what you have spoken...'); speechIn = my_vad(speechIn); %端点检测 rMatrix1 = mfccf(ncoeff,speechIn,fs); %采用MFCC系数作为特征矢量 rMatrix = CMN(rMatrix1); %归一化处理 Sco = DTWScores(rMatrix,N); %计算DTW值 [SortedScores,EIndex] = sort(Sco,2); %按行递增排序，并返回对应的原始次序 Nbr = EIndex(:,1:2) %得到每个模板匹配的2个最低值对应的次序 [Modal,Freq] = mode(Nbr(:)); %返回出现频率最高的数Modal及其出现频率Freq Word = char('zero','One','Two','Three','Four','Five','Six','Seven','Eight','Nine'); if mean(abs(speechIn)) < 0.01 fprintf('No microphone connected or you have not said anything.\n'); elseif (Freq <2) %频率太低不确定 fprintf('The word you have said could not be properly recognised.\n'); else fprintf('You have just said %s.\n',Word(Modal,:)); end

Word = char('zero','One','Two','Three','Four','Five','Six','Seven','Eight','Nine'); % 如果声音太小，输出无法识别 if mean(abs(speechIn)) fprintf('No microphone connected or you have not said ...

中国石油大学(北京)克拉玛依校区在广东2021-2024各专业最低录取分数及位次表.pdf

全国各大学在广东省2021~2024年各专业最低录取分数及位次

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七周掌握七种编程语言：实践指南

Seven More Languages in Seven Weeks.pdf

Seven More Languages in Seven Weeks(Pragmatic,2014)

Draw a binary tree with seven vertices and only one leaf.

if (nodemap.containsKey(SoftWareInfoConstant.ZERO_SEVEN)|| nodemap.containsKey(SoftWareInfoConstant.ZERO_EIGHT))

const eight1:Seven=new Eight("sss", 0) eight1.d(); const seven1:Eight=new Seven("sss", 0) seven1.d();

POOR_IN2000901UV.xsd文件在哪下载或查看

python调用7z.dll

起标题，每个标题50字以上，与传奇3，超高爆率，复古怀旧，元素觉醒，七大元素，十三魔法，神舰跑船，三端互通，原汁原味，经典玩法，经典三职业，需要30份不同的标题

书写一个python程序，不能报7后者不能含7

中国石油大学(北京)克拉玛依校区在广东2021-2024各专业最低录取分数及位次表.pdf

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