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Engineering

Computer Science

alen.txt' and display all the palindrome w

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…
Write a program to draw a quiz score histogram. Your program shouldread data from a file. Each line of the file contains a number in the range0-10. Your program must count the number of occurrences of each scoreand then draw a vertical bar chart with a bar for each possible score (0-10) with a height corresponding to the count of that score. For example,if 15 students got an 8, then the height of the bar for 8 should be 15.Hint: Use a list that stores the count for each possible score. An examplehistogram is shown below: o o D D0 1 2 3 4 5 6 7 8 9 10
python Write a function that reads in a text file, and counts the number of times each word occursin the file. Then print the words alphabetically with its corresponding count. Each word willbe separated by a space or newline, but there is no guarantee that each word will be on aseparate line.
Write a program that creates the file "LetterGrades.txt" filled with 1000 randomly generated letter grades. Letter grades: A+, A, B+, B, C+, C, D+, D, and F. Python program
IN PYTHON: Decrypting with ascii I have a file called 'dict.txt'. This file contains over 50,000 english words. One word from this file is used as a key (we do not know which one of course). Some have capital letters. I have another file called 'decrypt.txt' which is a file containing a string of numbers i must decrypt using a key found in the 'dict.txt'. This 'decrypt.txt' file message has length of 300. My question is, since i do not know which word (from the file with the 50,000+ words) is the key I must use to decrypt the other file, how do I write a function that: loops through all possible keys from 'dict.txt' to find the one that decrypts my file 'decrypt.txt' best? Somehow i must count how many 'words' are actual words to determine which key is best and then print my final decrypted message.
Write a python program that prompts the user for their favorite basketball team. It should be able to read the list of teams provided below in a file called favorite_teams.txt and check if their team is in that file. Teams in the file:JazzBullsMavericksSpursIf the team is in the file let the user know that their team is in the list of favorites. If the team is not in the file, add the team to the end of the file. Also, let the user know that their team will be added to the file.Sample Run in File:What is your favorite NBA team? Jazz [Enter]Your team Jazz is in the listFile before and after run: JazzBullsMavericksSpurs Sample Run not in File:What is your favorite NBA team? Pelicans [Enter]Your team Pelicans is not in the list. It will be added.File before run: JazzBullsMavericksSpursFile after run:JazzBullsMavericksSpursPelicans
Write a program that reads the strings from file SortedStrings. txt and report whether the strings in the files are stored in ascending order. If the strings are not sorted in the file, display the first two strings that are out of order.
here is a text file containing the details of several invoices details. Each invoice uses 3 lines of the file. The first of the three lines is a string giving the date of the invoice, for example “1/5/2021” or “2/6/2021”. The second of the three lines contains double giving the amount, the third line is boolean indicating whether it is paid or not. However, the very first line of the file is an integer number, which says how many invoices are given in the file in the lines which follow it (i.e. how many records will follow). Text file example for two vehicles “invoices.txt” 2 1/5/2021 50.0 true 2/6/2021 20.0 false Write code for a method named processTextFile() which will open the file named ‘invoices.txt’, from which it will read the data of invoices. It will create Invoice objects using this data by calling the constructor that takes the parameters (date, amount, paid) , placing them into an ArrayList invoiceList.
Write a program that reads student's IDs and exam scores (type int) for a particular exam in a course from each line of an input file (the input file is included). You need to compute the average of these scores and assign grades to each student according to the following regulation: If a student's score is within 10 points (above or below) of the average, assign a grade of satisfactory. If a student's score is more than 10 points above average, the grade will be outstanding. If a student's score is more than 10 points below the average, the grade will be unsatisfactory. The output of your program should consist of a three-column table that shows each ID, score, and corresponding grade. A sample output is shown below. ID SOLS SENTO 0 1 2 3 4 8 9 Score 75 99 66 43 87 65 82 91 84 76 Grade Satisfactory Outstanding Unsatisfactory Unsatisfactory Outstanding Unsatisfactory Satisfactory Outstanding Satisfactory Satisfactory Write necessary functions and put them in a module to process this…
Write a program that reads student's IDs and exam scores (type int) for a particular exam in a course from each line of an input file (the input file is included). You need to compute the average of these scores and assign grades to each student according to the following regulation: If a student's score is within 10 points (above or below) of the average, assign a grade of satisfactory. If a student's score is more than 10 points above average, the grade will be outstanding. If a student's score is more than 10 points below the average, the grade will be unsatisfactory. The output of your program should consist of a three-column table that shows each ID, score, and corresponding grade. A sample output is shown below. ID 0 ONM45676 0 1 8 9 Score 75 99 66 43 87 65 82 91 84 76 Grade Satisfactory Outstanding Unsatisfactory Unsatisfactory Outstanding Unsatisfactory Satisfactory Outstanding Satisfactory Satisfactory
Write a program that queries information from three files(given to you). The first file contains the names and telephone numbers of a group of people. The second file contains the names and Social Security numbers of a group of people. The third file contains the names and annual income of a group of people. The groups of people should overlap. Your program should ask the user for a telephone number and then print the name, Social Security number, and annual income, if it can determine that information. Sample run1: Enter the phone number (7 digits, with a dash): 555-1234 555-1234 is associated with Bob Bob's SSN is 000300021 Bob's salary is 55000 Sample run2: Enter the phone number (7 digits, with a dash): 675-4566 Couldn't find a name associated with that number. Sample run3: Enter the phone number (7 digits, with a dash): 000-2345 000-2345 is associated with John John's SSN is 000000004 John's salary is 65000 python language
By sending a block from the write buffer to main memory, the processor initiates a cache request that is not completed. Next, do this.