ite a python program to find the longest words in a text file for example: [general-purpose, interpreted, dynamic, object-oriented, imperative] def longest_word(filename): with open(filename, 'r') as infile: words = #TO DO -- Complete the Code max_len = #TO
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Write a python program to find the longest words in a text file
for example: [general-purpose, interpreted, dynamic, object-oriented, imperative]
def longest_word(filename):
with open(filename, 'r') as infile:
words = #TO DO -- Complete the Code
max_len = #TO DO -- Complete the Code
words = infile.read().split()
print(longest_word('test.txt'))
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- Write a python program that uses a dictionary to assign “codes” to each letter of the alphabet. For example: codes = { ‘A’ : ‘%’, ‘a’ : ‘9’, ‘B’ : ‘@’, ‘b’ : ‘#’, etc . . .} Using this example, the letter A would be assigned the symbol %, the letter a would be assigned the number 9, the letter B would be assigned the symbol @, and so forth. The program should open a specified text file (text.txt), read its contents, then use the dictionary to write an encrypted version of the file’s contents to a second file. Each character in the second file should contain the code for the corresponding character in the first file. Write a second program that opens an encrypted file and displays its decrypted contents on the screen. Below is the required dictionary. ➔➔➔➔➔➔➔➔ # Encryption and decryption are inverse of one another CODE =…An “inverted file” is a critical data structure for implementing applications like the index of a book, or a web search engine. Given a document D (which can be viewed as an unordered, numbered list of words), an inverted file is an ordered list of words L such that for each word W in L, we store the indices of the places in D where W appears. Write a C# program (from scratch please, written by yourself (ask instructor if you are stuck), not borrowed from any other sources) that reads in a list of words separated by spaces from a text file, then uses an efficient O(N) algorithm to create the inverted file index (hint: consider the topic of this chapter, consider using a Dictionary/hashtable to help you), and writes this index out to another file or prints it to the screen. Each line of the output file should start with the next word (the words should be listed in alphabetical order, and this sorting does not have to be part of the O(N) runtime complexity, e.g. you can use regular…make a script explaining the python code line by line class Course: course_count = 0 def __init__(self, id_num, units, title): self.id_num = id_num self.units = units self.title = title Course.course_count += 1 def __str__(self): return f"ID: {self.id_num}, Title: {self.title}, Units: {self.units}" class CourseManager: def __init__(self): self.courses = [] def add_course(self, id_num, units, title): self.courses.append(Course(id_num, units, title)) def list_all_courses(self): if not self.courses: print("Your list is empty.") else: print("Your course list:\n") print("Course\t Unit\t Title") for course in self.courses: print(course.id_num," ",course.units,"\t ",course.title) def search_by_word(self, word): word = word.lower() result = [] for course in self.courses: if word…
- write program code in java: Write a program that reads two files “Data1.txt”, “Data2.txt”; Then add their corresponding elements and produce an output file “output.txt”. If the number of elements are not equal, fill the elements of the smaller file up with “0” s. Sample output: Elements of the “Data1.txt”: 3 5 7 8 9 Elements of the “Data2.txt”: 45 11 Elements of the “Output.txt”: 48 16 7 8Rewrite the program in Example 3-1. DigestThread class to output the result of each file on an output file for each one by assigning a new name for the output file. The language is Java Example 3-1. DigestThread import java.io.*; import java.security.*; import javax.xml.bind.*; // for DatatypeConverter; requires Java 6 or JAXB 1.0 public class DigestThread extends Thread { private String filename; public DigestThread(String filename) { this.filename = filename; } @Override public void run() { 56 | Chapter 3: Threads www.it-ebooks.info try { FileInputStream in = new FileInputStream(filename); MessageDigest sha = MessageDigest.getInstance("SHA-256"); DigestInputStream din = new DigestInputStream(in, sha); while (din.read() != -1) ; din.close(); byte[] digest = sha.digest(); StringBuilder result = new StringBuilder(filename); result.append(": "); result.append(DatatypeConverter.printHexBinary(digest)); System.out.println(result); } catch (IOException ex) {…Write a java program that will generate a permuterm index from the terms in the files in an input directory. The program should prompt the user for a single directory and find all of the terms (after processing) in each file in it. The program should then find the permutations of each term and store them (keeping track of the original word each permutation comes from). After all of the text files in the directory have been read, the output of the program should display the permutations in sorted order along with the original term. Use the dollar sign as the end of term symbol.
- Computer Science Consider the following C program that manipulates newly created file named foo.txt. Write the contents of foo.txt after its execution. int main(int argc, char *argv[]) { close(STDOUT_FILENO); int f = open(“foo.txt”, O_CREAT|O_WRONLY|O_TRUNC, S_IRWXU); assert (f >= 0); int rt = fork(); if (rt == 0) { write(f, “Child here!\n”, 20); printf(“Child terminates.\n”); } else if ( rt > 0) { (void) wait(NULL); write(f, “Parent here!\n”, 21); printf(“Parent terminates.\n”); } return 0; }Write a python program that scans in a large number of tweets from a file, and prints the top 5 hashtags. Approach Parse each word in the file Find a way to isolate the hashtags from the rest of the tweet Compute the frequency of each unique hashtag. Find the top 5 hashtags. Caveats 1. Because this is public dataset, there are many tweets that use special characters that may cause issues during reading in your file. To avoid this, explicitly specify the encoding mode in open when reading in the file. with open('twitter_data.txt', 'r', encoding='utf8') as f: 2. When parsing hashtags be sure to change everything to lowercase. There are cases in the file where two hashtags are the same but differ in case. 3. There is no standard way of sorting a dictionary based on the values. Python gives you access to a sorted function where you can pass in a collection and also specify a comparator which outlines how you want to sort the values. This can be done with a one line lambda function.You are a cyber investigator, your task is to write a python program that can read file signatures from a file and save them into a list. Each file signature is an element of your list. Then, try to find out if there is a JPG file in there. If there is a JPG file, print out a True on screen. (File Signature for JPG file is: FF D8 FF DB) The input file is: FSCS360_Midterm_Exam_Part2.txt
- Write a Java program that reads from a URL and searches for a given word in the URL and creates a statistic file as an output. The statistic file needs to include some information from the URL. URL address Number of words in the URL page Number of repetitions for a given word displays the number of times the word appears. You need to have two functions, one for reading from the URL and the other function for searching the word.Write a python program that does the following: Reads information from a text file into a list of sublists. Be sure to ask the user to enter the file name and end the program if the file doesn’t exist. Text file format will be as shown, where each item is separated by a comma and a space:ID, firstName, lastName, birthDate, hireDate, salary Store the information into a list of sublists called empRoster. EmpRoster will be a list of sublists, where each sublist contains the information for one employee.The birthDate and hireDate in file are strings, but should be stored as objects of type Date.Example of EmpRoster list with 2 employees:[ [111,”Joe”, “Jones”, “09-01-1980”,”10-19-1999”, 95000], \ [222, “Sam”, “Smith”, “07-10-1956”,, “01-01-2000”, 50000] ] Print a report that shows the following: Employee RosterID First Name Last Name Birth Date Age Hire Date YrsWorked Salary WRITE the following information out to a…Write a program that reads a text file and creates an alphabetical index of words and in which lines of this original example. The file name is given as an argument to main (). Ignore the small-capital (all lowercase: k,l,p) and punctuation. Solve with ternary tree using the TST.java class (https://algs4.cs.princeton.edu/52trie/TST.java.html). An execution snapshot is then given. For the file: It was the best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness It will appear Index of file: exercise.txt age 3-4 best 1 foolishness 4 it 1-2-3-4 of 1-2-3-4 the 1-2-3-4 times 1-2 was 1-2-3-4 wisdom 3 worst 2
