Answered: i) If someone wants to send the…

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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In the Mystical Garden, each flower is associated with a secret numerical code that guards its mystical properties. The code validation process involves a series of botanical calculations. The validation process is described as follows: . Calculate the product of the digits at prime positions (1-based index) from left to right. Calculate the sum of the cubed digits at non-prime positions from left to right. If the absolute difference between the results from step 1 and step 2 is a perfect square, the flower code is considered valid; otherwise, it is invalid. Example: Consider the mystical flower code 73921546. Step 1. Calculate the product of the digits at prime positions. 7*3*1*5=105 Step 2. Calculate the sum of the cubed digits at non-prime positions. 9^3 + 2^3 +4^3 +6^3=729+8+64 +216 = 1017 Step 3. If the absolute difference between the results from step 1 and step 2 is a perfect square. |105 - 1017|=912 (not a perfect square) Flower code 73921546 is invalid. Your task is to write a…
You are given an array prices where prices[i] is the price of a given stock on the ith day. You want to maximize your profit by choosing a single day to buy one stock and choosing a different day in the future to sell that stock. Return the maximum profit you can achieve from this transaction. If you cannot achieve any profit, return 0. Example 1: Input: prices = [7,1,5,3,6,4] Output: 5 Explanation: Buy on day 2 (price = 1) and sell on day 5 (price = 6), profit = 6-1 = 5. Note that buying on day 2 and selling on day 1 is not allowed because you must buy before you sell. Example 2: Input: prices = [7,6,4,3,1] Output: 0 Explanation: In this case, no transactions are done and the max profit = 0. Please solve it in Java
You have been asked to store the IDs and scores of competitors in three rounds of a game and find out total score of each and print the ID of winner who is having maximum score. Following is the data: ID Score 1 Score 2 Score 3 123 23 12 24 234 34 10 32 345 12 34 21 456 10 23 21 567 10 19 23

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i) If someone wants to send the following message: “SELLALL” using your public key, what strings of digits should they send you (i.e., encrypt this message)?