1. Suppose that the name of a file in a computer directory consists of three digits followed by two lowercase letters, and each digit is 0, 1, or 2,and each letter is either a or b. List the names of these files in lexicographic order, where we order letters using the usual alphabetic order of letters.

1. Suppose that the name of a file in a computer directory consists of three digits followed by two lowercase letters, and each digit is 0, 1, or 2,and each letter is either a or b. List the names of these files in lexicographic order, where we order letters using the usual alphabetic order of letters.

Name: 1. Suppose that the name of a file in a computer directory consists o
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Description: 1. Suppose that the name of a file in a computer directory consists of three digits followed by two lowercaseletters, and each digit is 0, 1, or 2,and each letter is either a or b. List the names of these files inlexicographic order, where we order

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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Q1: China donated to Iraq 50,000 Sinopharm COVID-19 vaccines. Write C++ program to read the Ministry of Health database from a binary file called (people.bin) with 40,000,000 records. These vaccines will be given to doctors, nurses and elder who are older than 70 years old. Find all the people who will be given the vaccines according to the given information above. Store your results in a text file called (covid19.txt). Note: you have to stop if the number of people exceeds 50000. struct date { int year; int month; int day; }3; struct info { char name[10]; char job[20]; date birth; }3;
You have two dictionaries that you need to process together. Write a Python function to combine the contents. Combine two dictionaries and return a single dictionary with non-duplicate keys. Write a function called content_combiner that will take two dictionaries and return a single dictionary with non-duplicate keys. The output should be as shown {'gold': 'Yellow', 'karats': 24}
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UNIX ASSIGNMENT - IXQuestion 9 : In an organisation one wants to know how many programmers are there. The employee data is stored in a file called ‘personnel’ with one record per employee. Every record has field for designation. How can grep be used for this purpose?
iii. load_data() takes three strings (filenames) as parameters. These files must have formats similar to movies.csv, ratings.csv, and tags.csv, in this order. Your function must read records from each of these files (except the data in their header rows) and store them in three separate 2-D lists. Let's call these lists movie_db, ratings_db, and tags_db, respectively. Your function must return these lists. If a file cannot be opened, it must print an error message and returns an empty list for that file. Make sure to convert all numeric data to their correct types (e.g., ints or floats) before you store them in a list. The sample output below shows how data should be stored in the returned lists. Since these are 2-D lists, we can use the display_list() function to print their elements as follows. >>> movies_db, ratings_db, tags_db = load_data("movies_20.csv", "ratings_20.csv", "tags_20.csv") >>> display_list(movies_db [2:5]) [3, 'Grumpier Old Men (1995)', 'Comedy | Romance'] [4,…
Can any body help with nested record program?
C++ 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. Assume also the last names and first names do not contain whitespaces. 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 scores, and letter grades of the…
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The file needed is the second screenshot posted.
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You recently got a job as a library assistant. You are assigned to sort an archive of files. Files are marked by how old they are by years and you need to put the most recent files on the left.Here’s the stack of files- File 5 File 20 File 9 File 15 File 13 File 25 File 50 File 45 File 40 File 35 Which sorting algortihm would you use and why? The Head librarian handed you a file labeled as File 30. He told you, “I don’t care where other files are, just put this file in its place.” Use an algorithm to insert the file in the right place.
4. Write a C++ code that: 1. Read the sequences in the provided fasta file (unzip the attached file) 2. Build a Kmer count table (use array) where k = 10%; 3. Build a histogram table of size 200 in which we store the frequency of counts collected in step 2. if frequency is 200 or more, increment the last element in the histogram array. 4. Report the results of histogram table to screen as the following: Kmer-Count Frequency 1 100 80 3 40 20 .... 200 300