*5.20 (Display four patterns using loops) Use nested loops that display the following patterns in four separate programs: Pattern A Pattern B Pattern C Pattern D 1 1 2 3 4 5 6 12 3 45 1 2 3 4 1 2 3 1 2 1 2 3 456 1 2 3 4 5 1 2 3 4 1 2 3 1 2 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 1 2 3 4 5 6 2 1 3 2 1 4 3 2 1 5 4 3 2 1 6 5 4 3 2 1 1

*5.20 (Display four patterns using loops) Use nested loops that display the following patterns in four separate programs: Pattern A Pattern B Pattern C Pattern D 1 1 2 3 4 5 6 12 3 45 1 2 3 4 1 2 3 1 2 1 2 3 456 1 2 3 4 5 1 2 3 4 1 2 3 1 2 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 1 2 3 4 5 6 2 1 3 2 1 4 3 2 1 5 4 3 2 1 6 5 4 3 2 1 1

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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5.21 In Python: A year in the modern Gregorian Calendar consists of 365 days. In reality, the earth takes longer to rotate around the sun. To account for the difference in time, every 4 years, a leap year takes place. A leap year is when a year has 366 days: An extra day, February 29th. The requirements for a given year to be a leap year are: 1) The year must be divisible by 4 2) If the year is a century year (1700, 1800, etc.), the year must be evenly divisible by 400 Some example leap years are 1600, 1712, and 2016. Write a program that takes in a year and determines whether that year is a leap year. Ex: If the input is: 1712 the output is: 1712 is a leap year. Ex: If the input is: 1913 the output is: 1913 is not a leap year. Your program must define and call the following function. The function should return true if the input year is a leap year and false otherwise.def is_leap_year(user_year)
Complete and modify the code. 1 def to_share(total_candies, n_friends=4): 2 """Return the number of leftover candies that must be 3 smashed after distributing 4 the given number of candies evenly between 3 friends. 5 6 >>> to_share(91) 7 1 8 """ 9 return total_candies 10 11 to_share(10, 4) 12 to_share(5) 13 to_share(1, 5)
21.2 Project 1 (Checkpoint B): DNA Write the full C++ code for this Implement the following functions: /** * Reads from standard input a list of Short Tandem Repeat (STRs) * and their known counts for several individuals * * @param nameSTRs the STRs (eg. AGAT, AATG, TATC) * @param nameIndividuals the names of individuals (eg. Alice, Bob, Charlie) * @param STRcounts the count of the longest consecutive occurrences of each STR in the DNA sequence for each individual * @pre nameSTRs, nameIndividuals, and nameSTRs are empty * @post nameSTRs, nameIndividuals and STRcounts are populated with data read from stdin **/ void readData(vector<string>& nameSTRs, vector<string>& nameIndividuals, vector<vector<int>>& STRcounts) For example, consider the input: 3 AGAT AATG TATC Alice 5 2 8 Bob 3 7 4 Charlie 6 1 5 In the first line, the number of STRs followed by the names of those STRs, which will be populated into the vector nameSTRs. The remaining lines contain…
Python 3.7.4 Given that add, a function that expects two int parameters and returns their sum, and given that two variables, euro_sales and asia_sales, have already been defined: Write a statement that calls add to compute the sum of euro_sales and asia_sales and that associates this value with a variable named eurasia_sales.
C++ Given a positive integer, N, the ’3N+1’ sequence starting from N is defined as follows: If N is an even number, then divide N by two to get a new value for N If N is an odd number, then multiply N by 3 and add 1 to get a new value for N. Continue to generate numbers in this way until N becomes equal to 1 For example, starting from N = 3 the complete ’3N+1’ sequence would be: 3, 10, 5, 16, 8, 4, 2, 1 Write code to ask the user to enter a positive integer (N) in the main() function. Write a function sequence() that receives the integer value N and display the ‘3N+1’ sequence starting from the integer value that was received (entered by the user). The function must also count and return the numbers that the sequenceconsists of. The returned value must be displayed from the main() function.
1(a): Implement the following C function : concatenate the lowest byte of each of two integers. The output should have 0's in the two most significant bytes , followed by the least significant byte of the first then second argument . For example , concatLowBytes (0x12345678 , 0xaabbccdd) 0x000078dd . You may use hexidecimal constants of any size. You should not use binary notation , function calls , loops or conditional statements. Examples : concatLowBytes ( 0x00000011 , 0x00000022)=0x00001122 concatLowBytes (0x12345678 , 0xaabbccdd )= 0x000078dd int concatLowBytes (int x, int y){ }
**11.18** Java Solve (ArrayList of Character) Using the following header, create a method that produces an array list of characters from a string: toCharacterArray public static ArrayListCharacter> (String s) ToCharacterArray("abc"), for example, returns an array list containing the characters 'a', 'b', and 'c'.
13. Implement function triangleArea(a,b,c) that takes as input the lengths of the 3 sides of a triangle and returns the area of the triangle. By Heron's formula, the area of atriangle with side lengths a, b, and c is √ s ( s−a )( s−b)( s−c ) , where s=(a+b+ c )/ 2 .>>> triangleArea(2,2,2)1.7320508075688772
7.24 LAB: Convert to binary-functions Write a program that takes in a positive integer as input, and outputs a string of 1's and O's representing the integer in binary. For an integer x, the algorithm is As long as x is greater than 0 Output x 2 (remainder is either 0 or 1) x = x // 2 Note: The above algorithm outputs the 0's and 1's in reverse order. You will need to write a second function to reverse the string Ex: If the input is the output is: 110 The program must define and call the following two functions. Define a function named int to reverse_binary() that takes an integer as a parameter and returns a string of 1's and O's representing the integer in binary (in reverse). Define a function named string reverse() that takes an input string as a parameter and returns a string representing the input string in reverse. def int_to_reverse_binary(integer_value) def string reverse(input_string) LAB ACTIVITY 7.24.1: LAB. Convert to binary-functions 0/10 1 # Define your functions here. 2…
5.28 LAB: Convert to binary - functions Write a program that takes in a positive integer as input, and outputs a string of 1's and 0's representing the integer in binary. For an integer x, the algorithm is: As long as x is greater than 0 Output x % 2 (remainder is either 0 or 1) x = x / 2 Note: The above algorithm outputs the 0's and 1's in reverse order. You will need to write a second function to reverse the string. Ex: If the input is: 6 the output is: 110 Your program must define and call the following two functions. The IntegerToReverseBinary() function should return a string of 1's and 0's representing the integer in binary (in reverse). The ReverseString() function should return a string representing the input string in reverse. string IntegerToReverseBinary(int integerValue)string ReverseString(string userString)
PYTHON CODE: In order to beat AlphaZero, Grandmaster Hikaru is improving her chess calculation skills.Today, Hikaru took a big chessboard with N rows (numbered 1 through N) and N columns (numbered 1 through N). Let's denote the square in row r and column c of the chessboard by (r,c). Hikaru wants to place some rooks on the chessboard in such a way that the following conditions are satisfied:• Each square of the board contains at most one rook.• There are no four rooks forming a rectangle. Formally, there should not be any four valid integers r1, c1, r2, c2 (≠r2,c1≠c2) such that there are rooks on squares (r1,c1), (r1,c2 (r2,c1)and (r2,c2).• The number of rooks is at least 8N.Help Hikaru find a possible distribution of rooks. If there are multiple solutions, you may find any one. It is guaranteed that under the given constraints, a solution always exists.InputThe first line of the input contains a single integer T denoting the number of test cases. The first and only line of each test…
10.25 LAB: Quadratic formula Implement the quadratic_formula() function. The function takes 3 arguments, a, b, and c, and computes the two results of the quadratic formula: x1=−b+b2−4ac2a x2=−b−b2−4ac2a The quadratic_formula() function returns the tuple (x1, x2). Ex: When a = 1, b = -5, and c = 6, quadratic_formula() returns (3, 2). Code provided in main.py reads a single input line containing values for a, b, and c, separated by spaces. Each input is converted to a float and passed to the quadratic_formula() function. Ex: If the input is: 2 -3 -77 the output is: Solutions to 2x^2 + -3x + -77 = 0 x1 = 7 x2 = -5.50