The CSV (or comma-separated values) format is commonly used for tabular data. Each table row is a line, with columns separated by commas. Items may be enclosed Programming Projects 371 in quotation marks, and they must be if they contain commas or quotation marks. Quotation marks inside quoted fields are doubled. Here is a line with four fields: 1729, San Francisco, "Hello, World", "He asked: ""Quo vadis?"" Write a CSVReader program that reads a CSV file, and provide methods int numberofRows () int numberofFields (int row) String field(int row, int column)

The CSV (or comma-separated values) format is commonly used for tabular data. Each table row is a line, with columns separated by commas. Items may be enclosed Programming Projects 371 in quotation marks, and they must be if they contain commas or quotation marks. Quotation marks inside quoted fields are doubled. Here is a line with four fields: 1729, San Francisco, "Hello, World", "He asked: ""Quo vadis?"" Write a CSVReader program that reads a CSV file, and provide methods int numberofRows () int numberofFields (int row) String field(int row, int column)

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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1.A text file contain birth date of some employees with format dd/mm/yy: 01/06/50 03/06/51 10/02/54 08/01/48 26/08/51 27/04/54 21/09/51 … and so on Read the file using C and find out how many employees with age: –above 51 –between 44 – 51 –between 36 – 43 –between 28 – 35 –below 28 (note : age = now – birth date) Using C Language, modulo, and file processing, Sir, thx.
Integer grid_size is read from input, representing the number of rows and columns of a two-dimensional list. Two-dimensional list pattern_2d is created with zeros, 0, as the initial values. For each element at row index i and column index j of pattern_2d, assign the element with the sum of i, j, and 1.
Write a procedure for encryption by rotating each plaintext byte different number of positions. For example, in the following array that represents the encryption key, each number indicates a left rotation: key BYTE 6, 4, 1, 2, 7, 5, 2, 4, 3, 6. Pass the pointer to the text string in EDX, the array size to ECX, a pointer to the key array in ESI, and the direction value (0 or 1) in EBX. Assume that the key array size is 10. Your procedure should loop through plain text and align the key to the first 10 bytes of the message. Rotate each plain text to the left (if the value in EBX is 0) or to the right (if the value in EBX is 1) by the amount in the key array: first byte by 6, second byte by 4 etc. Then align the key to the next 10 bytes until the whole message is encrypted. Write a program that tests the procedure by calling : one time with EBX = 0 (encrypting), then with EBX = 1 (decrypting). Print out the text three times: the original, then the encrypted, then the decrypted.
Please help computer graphics question Let Z be the set of real integers and R the set of real numbers. The sampling process may be viewed as partitioning the x-y plane into a grid, with the central coordinates of each grid being from the Cartesian product Z2, that is a set of all ordered pairs (zi, zj), with zi and zj being integers from Z. Then, f(x, y) is a digital image if (x, y) are integers from Z2 and f is a function that assigns a gray-level value (that is, a real number from the set R) to each distinct coordinate pair (x, y). What happens to the digital image if the gray levels also are integers? a) The Digital image then becomes a 2-D function whose coordinates and amplitude values are integers b) The Digital image then becomes a 1-D function whose coordinates and amplitude values are integers c) The gray level can never be integer d) None of the mentioned
Write a python program that read any xls file and return 3 things 1. y is a 1-dimentional numpy array containing the last column of the spreadsheet. 2. X is a 2-dimensional numpy array that contains the data in the other columns and the first column is filled with 1s. 3. labels is a list of strings from the header in the spreadsheet.
In python, I'd like to split the contents in an XML file into separate parallel arrays. An example would be: <PROFILE> <STUDENT> <NAME>Jim</NAME> <AGE>18</AGE> <GRADE>95%</GRADE> </STUDENT> <STUDENT> <NAME>Andrew</NAME> <AGE>16</AGE> <GRADE>82%</GRADE> </STUDENT> </PROFILE> into: name = ['Jim', 'Andrew'] age = ['18', '16'] grade = ['95%', '82%']
Write a script in Python to play two-dimensional Tic-Tac-Toe between two human players who alternate entering their moves on the same computer. Use a 3-by-3 two-dimensional array . Each player indicates their moves by entering a pair of numbers representing the row and column indices of the square in which they want to place their mark, either an 'X' or an 'O'. When the first player moves, place an 'X' in the specified square. When the second player moves, place an 'O' in the specified square. Each move must be to an empty square. After each move, determine whether the game has been won and whether it’s a draw.
Exercise 11.10. Two words are “rotate pairs” if you can rotate one of them and get the other (see rotate_word in Exercise 8.12). Exercise 8.12. ROT13 is a weak form of encryption that involves “rotating” each letter in a word by 13 places. To rotate a letter means to shift it through the alphabet, wrapping around to the beginning if necessary, so ’A’ shifted by 3 is ’D’ and ’Z’ shifted by 1 is ’A’. Write a function called rotate_word that takes a string and an integer as parameters, and that returns a new string that contains the letters from the original string “rotated” by the given amount. For example, “cheer” rotated by 7 is “jolly” and “melon” rotated by -10 is “cubed”. You might want to use the built-in functions ord, which converts a character to a numeric code, and chr, which converts numeric codes to characters. Potentially offensive jokes on the Internet are sometimes encoded in ROT13. If you are not easily offended, find and decode some of them. Please solve Exercise 11.10 -…
Write a Python program, in a file called forest_map.py, to solve the following problem: Hansel and Gretel are abandoned in a forest with only a bag of breadcrumbs and must find their way home. The forest is laid out in a grid pattern. They can only take a step at a time through the forest, going either South or East. They cannot move diagonally, they cannot move North, and they cannot move West. As they leave a space, they will leave a breadcrumb (“*”) behind just in case -- if they have any breadcrumbs left. They do not leave a breadcrumb in the space where the path ends. If they don’t have enough breadcrumbs, they still move on to the next space, leaving their current space as it was. Given (as input) the number of breadcrumbs Hansel and Gretel have, and given the forest layout (as a fixed, but changeable, two-dimensional list in your code), determine whether Hansel and Gretel have just enough, more than enough, or not enough, breadcrumbs to leave in the path to get to the end. If…
The following data fragment appears in the midst of a data stream that employs the byte-stuffing mechanism described in the text:A B ESC C ESC FLAG FLAG D ESC FLAG FLAG D ESC FLAG FLAG D ESC FLAG FLWhat is the result of stuffing?
How does vector imaging operate? What is it? Give an illustration to illustrate your argument. What file formats are associated with vector images?
9. Suppose you are searching for a girls name written using only the lettersD, N and A. You have the letters ordered alphabetically (A, D, N)and you start writing down possibilities:A, D, N, AA, AD, AN, DA, DD, DN, NA, ND, NN, ...(a) How many strings of four or fewer letters are there where theletters are D, N or A?(b) In the above possibilities, are you searching in a depth first orbreadth first way?(c) What are the next three possible names you would write down?(d) How many possibilities will you write down ANNA?