*12.2 (Array IndexOutofBoundsException) Using the two arrays shown below, write a program that prompts the user to enter an integer between I and 12 and then displays the months and its number of days corresponding to the integer entered. Your program should display "wrong number" if the user enters a wrong number by catching ArrayIndexOutofBoundsException. String() months ("January", "February". "March", "April". "May", "June", "July". "August", "September". "October". "November". "December"): int [) don - (31, 28, 31, 30, 31, 30. 31, 31, 30, 31. 30, 31):

*12.2 (Array IndexOutofBoundsException) Using the two arrays shown below, write a program that prompts the user to enter an integer between I and 12 and then displays the months and its number of days corresponding to the integer entered. Your program should display "wrong number" if the user enters a wrong number by catching ArrayIndexOutofBoundsException. String() months ("January", "February". "March", "April". "May", "June", "July". "August", "September". "October". "November". "December"): int [) don - (31, 28, 31, 30, 31, 30. 31, 31, 30, 31. 30, 31):

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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7.13 LAB: Vending machine Given two integers as user inputs that represent the number of drinks to buy and the number of bottles to restock, create a VendingMachine object that performs the following operations: Purchases input number of drinks Restocks input number of bottles Reports inventory A VendingMachine's initial inventory is 20 drinks. Ex: If the input is: 5 2 the output is: Inventory: 17 bottles GIVEN: class VendingMachine: def __init__(self): self.bottles = 20 def purchase(self, amount): self.bottles = self.bottles - amount def restock(self, amount): self.bottles = self.bottles + amount def get_inventory(self): return self.bottles def report(self): print('Inventory: {} bottles'.format(self.bottles)) if __name__ == "__main__": # TODO: Create VendingMachine object # TODO: Purchase input number of drinks # TODO: Restock input number of bottles # TODO: Report inventory
1.9: DiamondWrite an application that prints the following diamond shape. Don’tprint any unneeded characters. (That is, don’t make any characterstring longer than it has to be.) (You may need to scroll to see everything.)***************************************** SAMPLE RUN #0: java Diamond
Please read instructions carefully:
11.8 LAB: Dates Complete the code to implement the following operations: Complete read_date(): Read an input string representing a date in the format yyyy-mm-dd. Create a date object from the input string. Return the date object. Call read_date() to read four (unique) date objects and store the date objects in a list. Call sorted() to sort the list of date objects, earliest first. Store the sorted dates in a new list. Output the sorted_dates, in the format mm/dd/yy. Hint: Use strftime() to format the date outputs. (See resource below.) Output the number of days between the last two dates in the sorted list as a positive number. Output the date that is 3 weeks from the most recent date in the format "July 4, 1776". Hint: Use timedelta() to set a duration of time for the arithmetic on date objects. (See resources below.)Ex: timedelta(days=50, seconds=27, hours=8, weeks=2) will define a duration of 50 days + 27 seconds + 8 hours + 2 weeks. Output the full name of the day…
23) If x is a char, and values is an int array, then values[x]a) causes a syntax error b) causes an Exception to be thrownc) casts x as an int based on x’s position in the alphabet (for instance, if x is ‘a’ then it uses 0 and if x is‘z’ then it uses 25)d) casts x as an int based on x’s Unicode value (for instance, if x is ‘a’ then it uses 97 and if x is ‘z’ thenit uses 122)e) casts x as an int based on the digit that is stored in x (for instance, if x is ‘3’ it uses 3) but throws anexception if x does not store a digit
22.4 LAB: Adjust list by normalizing - functions (Use Python) When analyzing data sets, such as data for human heights or for human weights, a common step is to adjust the data. This can be done by normalizing to values between 0 and 1, or throwing away outliers. For this program, adjust the values by subtracting the smallest value from all the values. Input values should be added to the list until -1 is entered. Ex: If the input is: 30 50 10 70 65 -1 the output is: 20 40 0 60 55 Your program must define and call the function:get_minimum_int(nums)
Can you help me write this code?
5.19 LAB: Adjust list by normalizing When analyzing data sets, such as data for human heights or for human weights, a common step is to adjust the data. This can be done by normalizing to values between 0 and 1, or throwing away outliers. For this program, adjust the values by dividing all values by the largest value. The input begins with an integer indicating the number of floating-point values that follow. Assume that the list will always contain less than 20 floating-point values. For coding simplicity, follow every output value by a space, including the last one. And, output each floating-point value with two digits after the decimal point, which can be achieved as follows:printf("%0.2lf ", yourValue); Ex: If the input is: 5 30.0 50.0 10.0 100.0 65.0 the output is: 0.30 0.50 0.10 1.00 0.65 The 5 indicates that there are five floating-point values in the list, namely 30.0, 50.0, 10.0, 100.0, and 65.0. 100.0 is the largest value in the list, so each value is divided by 100.0.…
9.12 LAB: File name change PYTHON A photographer is organizing a photo collection about the national parks in the US and would like to annotate the information about each of the photos into a separate set of files. Write a program that reads the name of a text file containing a list of photo file names. The program then reads the photo file names from the text file, replaces the "_photo.jpg" portion of the file names with "_info.txt", and outputs the modified file names. Assume the unchanged portion of the photo file names contains only letters and numbers, and the text file stores one photo file name per line. If the text file is empty, the program produces no output. Ex: If the input of the program is: ParkPhotos.txt and the contents of ParkPhotos.txt are: Acadia2003_photo.jpg AmericanSamoa1989_photo.jpg BlackCanyonoftheGunnison1983_photo.jpg CarlsbadCaverns2010_photo.jpg CraterLake1996_photo.jpg GrandCanyon1996_photo.jpg IndianaDunes1987_photo.jpg LakeClark2009_photo.jpg…
10.8 LAB: Step counter - exceptions A pedometer treats walking 2,000 steps as walking 1 mile. Write a steps_to_miles() function that takes the number of steps as a parameter and returns the miles walked. The steps_to_miles() function throws a ValueError object with the message "Exception: Negative step count entered." when the number of steps is negative. Complete the main() program that reads the number of steps from a user, calls the steps_to_miles() function, and outputs the returned value from the steps_to_miles() function. Use a try-except block to catch any ValueError object thrown by the steps_to_miles() function and output the exception message. Output each floating-point value with two digits after the decimal point, which can be achieved as follows:print(f'{your_value:.2f}') The code I have so far(Python Code): import sysdef steps_to_miles(steps): try: if steps<0: raise ValueError('Exception: Negative step count entered.') return…
***Needs to be written in Java***
20.12 LAB: Insertion sort The program has four steps: Read the size of an integer array, followed by the elements of the array (no duplicates). Output the array. Perform an insertion sort on the array. Output the number of comparisons and swaps performed. main() performs steps 1 and 2. Implement step 3 based on the insertion sort algorithm in the book. Modify insertionSort() to: Count the number of comparisons performed. Count the number of swaps performed. Output the array during each iteration of the outside loop. Complete main() to perform step 4, according to the format shown in the example below. Hints: In order to count comparisons and swaps, modify the while loop in insertionSort(). Use static variables for comparisons and swaps. The program provides three helper methods: // Read and return an array of integers. // The first integer read is number of integers that follow. int[] readNums() // Print the numbers in the array, separated by spaces // (No space or newline…