Write a program to write a pattern into a new file (result.txt) as shown below (6 rows of "*" ), the result.txt file already exists. * ** *** **** ***** ******

Write a program to write a pattern into a new file (result.txt) as shown below (6 rows of "" ), the result.txt file already exists. * ** * ****

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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PYTHON: I need to get the avg statement out of the loop so that the output prints correctly. Any suggestions. Write a program that reads the student information from a tab separated values (tsv) file. The program then creates a text file that records the course grades of the students. Each row of the tsv file contains the Last Name, First Name, Midterm1 score, Midterm2 score, and the Final score of a student. A sample of the student information is provided in StudentInfo.tsv. Assume the number of students is at least 1 and at most 20. The program performs the following tasks: Read the file name of the tsv file from the user. Open the tsv file and read the student information. Compute the average exam score of each student. Assign a letter grade to each student based on the average exam score in the following scale: A: 90 =< x B: 80 =< x < 90 C: 70 =< x < 80 D: 60 =< x < 70 F: x < 60 Compute the average of each exam. Output the last names, first names, exam…
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Exercise 5: Write a Python program that reads each line of an input file original.txt and saves in a file called analysis.txt the line number, the number of words and characters found in that line without counting punctuations separating the words or found at the end of the line. For example, if the original.txt file is: In COMP2101, the students learn basic programming skills. Which includes: arithmetic and logical expressions, decisions, and loops. They will also learn how to read and write from keyboards and files. The file analysis.txt will contain Line1, 8 words and 48 characters Line2, 9 words and 61 characters Line 3, 13 words and 55 characters
6. Write a program that will randomly generate 500 integer numbers in the range -249 to 250. Write thosenumbers in a text file named “in.txt”. Now Sort (in ascending order) all the integer numbers in the file “in.txt”using Buuble Sort. Save the sorted output into another text file named “out.txt”. (Try to write separatefunction for SWAP and BUBBLE_SORT and call them from main function.)
2. Message Decoder Create a MessageDecoder program that reads from a file (one character at a time), and writes all non-numeric characters to a file called DecodedMessage.txt, displaying a secret (and motivational) message. ***Hint: .read() will return an int, but this can be type cast as a char. int and char are interchangeable (via type-caşting). You could run a loop on a condition like charInFile != (char) -1 Don't forget that -1 is a special character that denotes the end of a file!
WAP to read 4 student objects and write them into a file, then print total number of student number in file. After that read an integer and print details of student stored at this number in the file using random access and file manipulators.
1. Create a file that contains 20 integers or download the attached file twenty-integers.txttwenty-integers.txt reads:12 20 13 45 67 90 100 34 56 89 33 44 66 77 88 99 20 69 45 20 Create a program that: 2. Declares a c-style string array that will store a filename. 3. Prompts the user to enter a filename. Store the file name declared in the c-string. 4. Opens the file. Write code to check the file state. If the file fails to open, display a message and exit the program. 5. Declare an array that holds 20 integers. Read the 20 integers from the file into the array. 6. Write a function that accepts the filled array as a parameter and determines the MAXIMUM value in the array. Return the maximum value from the function (the function will be of type int). 7. Print ALL the array values AND print the maximum value in the array using a range-based for loop. Use informational messages. Ensure the output is readable.
Write a program using a for loop that creates a file and adds odd numbers that are in the integers 1 through 20 to the file. Name the file as numbers.txt. Then perform the following on the file: Read all of the numbers stored in the file and calculate their total. Display all the numbers in the file and the calculated total Using a for loop add the following numbers to the file 21 through 30 Delete the following numbers from the file 24, 25, 26 (using a temp.txt file) Change the number 11 to 50 (using a temp.txt file)
Create a .txt file with 3 rows of various movies data of your choice in the following table format: Movie ID number of viewers rating release year Movie name 0000012211 174 8.4 2017 "Star Wars: The Last Jedi" 0000122110 369 7.9 2017 "Thor: Ragnarok" Create a class Movie which instantiates variables corresponds to the table columns. Implement getters, setters, constructors and toString. ----Important 1. Implement two search methods to search Movies by their rating from unsorted array and by year (first) and a rating (second) from unsorted List. Test your methods and explain their time complexity.
Question 3: Write a program that reads a file of text and displays the number of words in that file. The filename is entered by the user. A Word is defined to be any number of consecutive letters (a...z, A...Z) only. Words are separated from each other by spaces (* “) and/or commas (*,') and/or semicolon (*;') and/or full stop (':'). Your program should write the words in the file "output.txt" along with the total word count. As shown below. file.txt Abedef, ;; gfdyire hsdhfkdsf, , ; , dkjfkjdljkfldj. .. mnbsdT .. ;; nbmxhs , a djks. output.txt Abcdef gfdyire hsdhfkdsf dkjfkjdljkfldj mnbsdT nbmxhs a djks Total count of words are = 8
9b_act2. Please help me answer this in python programming.
The python function file_first_chars takes one parameter, fname, the name of a text file, and returns a string made up of the first character from each line in the file. You may assume there are no blank lines in the file. Hint: Use a for loop to iterate over the lines of the file and accumulate the string of first characters.