precalculus exercises

/*1, a game,The first 20-off is the score of each of its own,21-30 off each pass is 10 points,31-40 off, each level is 20 points,41-49 off, each level is 30 points,50 off, is 100 points,Enter the number of levels you've reached now and ask for the score you have now.*/ /*var g=prompt ("Close number") var b = 0; if (g */Print a triangle two for loop nesting*********************************************************//*For (var h = 0;h */ /*For (var h = 0;h */ /*For (var h = 0;h

offset is generally calculated relative to the beginning of the file and is generally a positive number. However, if the whence parameter is provided, whence can be calculated from scratch for 0, and 1 for the current position as its origin. 2 means that the end of the file is calculated as the origin. Note that if the file is opened in a or a + mode, the file action tag is automatically returned to the end of the file each time the write operation is made. Fp.truncate ([size]) #把文件裁成规定的大小, th

{ public static final int NUM = 3; public static void Main (String args[]) { try { Socket socket = new socket ("127.0.0.1", 4700); BufferedReader sin = new BufferedReader (new InputStreamReader (system.in)); PrintWriter OS = new PrintWriter (Socket.getoutputstream ()); System.out.println ("Three sides from the client receive triangle sent to the server:"); System.out.println ("Please enter 3 sides:"); String ReadLine = ""; For (int i = 0; i Os.flush ()

14. Use for loop and range output15. Use for loop and range output 9 * 9 multiplication table16, for the prime number within 100 and. (Programming Questions)17. [1,3,2,7,6,23,41,24,33,85,56] from small to large (bubbling method) (programming)Li = [1,3,2,7,6,23,41,24,33,85,56]for i in Range (Len (LI)-1): # I range 0-9 if li[i] > li[i+1]: # Adjacent two number comparison li[i],li[ I+1] = Li[i+1],li[i]print (LI)Li = [1,3,2,7,6,23,41,24,33,85,56]for i in Range (Len (LI)-1): # I's Range 0-9

valueSecond, complete the main methodTips: 1, call the custom method, save the method return value in the variable maxscore 2, output variable result1 Public classHelloWorld {2 3 //complete the Main method4 Public Static voidMain (string[] args) {5 6 //Create object, object named Hello7HelloWorld Hello =NewHelloWorld ();8 9 //calling a method and saving the return value in a variableTen intMaxscore =hello.getmaxage (); One A

Write loop guess age program, guess three times wrong print cue message and exit the loop, guess to also print the message and exit the loop Count=0 whileCount 3: Num= Input ("guess age Game:") Guess=int(num)ifGuess = = -: Print ("congratulations on your guess.") Elif Guess> -: Print ("big.") Elif Guess -: Print ("it's small.") Count+=1Else: Print ("I guess I didn't guess three times.") Write a small example of a while loop nesting, using a tag to control the exit of all while loop

# Coding=utf-8import turtle# Draw Pentagram def Drawstar (x): Turtle.begin_fill () for I in range (5): Turtle.forward (x ) Turtle.right (144) Turtle.end_fill () # transfer position def goTo (x, y): turtle.up () Turtle.goto (x, y) Turtle.down () Turtle.setup (864, 576) Turtle.bgcolor ("Red") Turtle.color ("Yellow") Turtle.fillcolor ("Yellow") Turtle.hideturtle () GoTo ( -380, X) Turtle.showturtle () Drawstar () for I in range (4): x = 1 If i in [0, 3]:

Properties find a little exercise:1 classFoo:2 defF1 (self):3 Print('From foo.f1')4 5 defF2 (self):6 Print('From foo.f2')7 self.f1 ()8 9 Ten classBar (Foo): One defF2 (self): A Print('From bar.f2') - - theb =Bar () - b.f2 () - - The result is: + - fromBar.f2Make a slight change:1 classFoo:2 defF1 (self):3 Print('From foo.f1')4 5 defF2 (self):6 Print('From foo.f2')7 self.f1 ()8 9 Ten classBar (Foo): One defF1 (self): A

:") ifos.path.exists (fname):Print "The name is already exists!" Else: Break All=[] Print"\ n-Enter lines ('. ' by itself to quit) \ n" whileTrue:entry=raw_input (">") ifEntry = ='.': Break Else: All.append (entry) Fobj=open (fname,'W') Fobj.writelines (['%s%s'% (X,ls) forXinchAll ]) Fobj.close ()Print "done!" ifchoose=='2': Print 'You choose 2'fname=raw_input ("Please choose the file:") Fobj=ope

;//boolean b2=s1Fourth. Exercise 1: (1) write a program that prints values from 1 to 100public static void Main (string[] args) {test (100);} public static void Test (int num) {int i=0;while (iExercise 2: (2) write a program that generates 25 random numbers of type int, and for each random number, use the If-else statement to classify it as greater than, less than, or equal to a randomly generated value immediately following it.public static void Main (string[] args) {test ();} public static voi

Java.util.hashmap;import java.util.iterator;import Java.util.map;import Java.util.scanner;import Java.util.treemap;import Javax.management.runtimeerrorexception;public class Main {public static void Main (string[] args) {/* The application of Map collection in table-checking method is more */int num; Scanner in = new Scanner (system.in); num = In.nextint (); String week = Get_week (num-1); SYSTEM.OUT.PRINTLN (week); System.out.println (Get_week_english (Week)); In.close ();} public static Strin

); - } Wu - } About $ intSort1 (structPerson *p) - { - intI, J, K, M; - Char*arr; A + for(i=0; i6; i++) the { - for(j=i+1; j6; J + +) $ { them = strcmp ((p+i)->name, (P+J),name); the if(M >0) the { thearr = (p+i)name; -(p+i)->name = (p+j)name; in(p+j)->name =arr; the theK = (p+i)score; About(p+i)->score = (p+j)score; the(p+j)->score =K; the } the}R

1 ImportRequests2 ImportRe3 4URL ='http://www.ygdy8.net/html/gndy/dyzz/list_23_{}.html'5 forNinchRange (1, 2):6New_url =Url.format (n)7Html_1 =requests.get (New_url)8Html_1.encoding ='gb2312'9Detil_list = Re.findall ('', Html_1.text)Ten One forMinchdetil_list: AB_url ='http://www.ygdy8.net'+m -Html_2 =requests.get (B_url) -Html_2.encoding ='gb2312' theFTP = Re.findall ('', Html_2.text) -With open ('Tddy.txt','a', encoding='Utf-8') as F: -F.write (Ftp[0] +'\ n')Python3----

defMain (file_name="test.jpg", width=80, height=80, out_file_name="Out_file"): *Text ="" $im =Image.open (file_name)Panax Notoginsengim =im.resize (width, height), image.nearest) - forIinchRange (height): the forJinchRange (width): +Content =Im.getpixel ((J, i)) AText + = Get_char (*content) theText + ="\ n" + Print(text) -Write_file (out_file_name, text)#the characters are drawn to the file $ $ - if __name__=='__main__': - Main () the - Wuyi the Picture test: -Http://labf

This article is based on the 0 basics of Python, the most basic exercise, not including functions and object-oriented.Are I collected on the Internet some of the exercise materials, not much nonsense on the topic1. Use three lines of print to complete the display of the following information: ================================== = 欢迎进入到身份认证系统V1.0 = 1. 登录 = 2. 退出 = 3. 认证 = 4. 修改密码 ==================================代码：Print ("="*50) Print ("=\t Welcome to the authenticati

their definitions into a hash list; The second part lets the user enter a word, and the program gives the definition of the word.// 字典类function Dict () { this.hashTable = new HashTable(); this.save = save; this.find = find;}function save (word, description) { this.hashTable.put(word, description);}function find (word) { return this.hashTable.get(word);}// 示例let d = new Dict();d.save('Mazey', 'a strong man.');d.save('Cherrie', 'a beautiful girl.');d.save('John', 'unknown.');consol

Implementation of the Stack// 栈类function Stack () { this.dataStore = []; this.top = 0; // 栈顶位置 相当于length，不是索引。 this.push = push; this.pop = pop; this.peek = peek; this.clear = clear; this.length = length;}// push: 入栈function push (element) { this.dataStore[this.top++] = element;}// pop: 出栈function pop () { return this.dataStore[--this.top];}// peek: 取栈顶元素function peek () { return this.dataStore[this.top - 1];}// clear: 清空栈function clear () { this.top = 0;}// leng

2, randomly generate a number within five bits, and then output the number of bits in total, what each bit is3. Develop a game application titled "Flipflop". It counts from 1 to 100, and a multiple of 3 is replaced with the word "Flip", a multiple of 5 is replaced with the word "Flop", and a multiple of 3 and 5 is replaced with the word "flipflop".5. Generate 13-bit barcodeEAN-13 Code rule: The 13th digit is the computed checksum of the first 12 digits.Example: 690123456789The 13th-digit process

1 ImportRe2 ImportHashlib3 ImportJSON4 5 defGET_MD5 (PWD):#MD5 Encryption6m =hashlib.md5 ()7M.update (Pwd.encode ('Utf-8'))8 returnm.hexdigest ()9 Ten defGET_NAME_MD5 ():#' Add salt ' encryption Onehash = HASHLIB.MD5 ('python'. Encode ('Utf-8')) AHash.update ('Admin'. Encode ('Utf-8')) - returnhash.hexdigest () - the defwrite_to_file (content): -With open ('Dic.txt','a', encoding='Utf-8') as F: -F.write (json.dumps (content, Ensure_ascii=false) +'\ n') - f.close () + - defto_file_read

2419:c language exercises and other long string sortingTime limit:1 Sec Memory limit:128 MB submit:426 solved:169 [Submit] [Status] [Web Board] Description Enter an equal-length string of n (nInput N and N equal-length string Output n a sorted string, Sample Input , 5 abcdf 12345 ert45 fg432 erfff Sample Output 12345 abcdf erfff ert45 fg432 AC Code: #include