Suppose that you forgot your four-digit passcode to unlock your smartphone. You begin by trying 0-0-0-0 and intend to try every possible passcode until you unlock the phone. This method is an example of which of the following approaches? O approximation Ointractable problem brute force approach heuristic approach

Suppose that you forgot your four-digit passcode to unlock your smartphone. You begin by trying 0-0-0-0 and intend to try every possible passcode until you unlock the phone. This method is an example of which of the following approaches? O approximation Ointractable problem brute force approach heuristic approach

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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Please solve the running time of the problem below. Please show your solution. See attached photo for the example. int exam_2(int n) { int i, j, sum = 0; if(n==1) { return 1; } for(i=1; i<=n/2; i++) { for(j=1; j<=n; j+=3) { sun += j; } } return sum + exam_2(n/3);}
Can you answer this and send it ASAP Ireally need it for my homework
A kid can hop one step, two steps, or three steps at a moment while running up a stairway with n steps. Use a technique to determine how many different methods the child can run up the steps.
Write a program using the above idea but to solve the following situation:In a certain application (details withheld to protect the company's 'privacy'), legitimate values are:Range of Values Category0 - 5 B8 - 14 N20 - 21 Q25 - 43 D50 - 59 N60 - 99 AThe values are decimal ones -- not integers (the cutoff valuse just happen to be whole numbers). Any value notinside a specified range is considered invalid and should receive a category value of '-'. (Note that category 'N'has two ranges associated with it...)Write templated functions which can receive a value, the arrays for legal value limits and resulting categories,and an invalid category value and return the resulting mapped category. (You'll have at least two -- one for thisprogram and one for the grade situation as above.) Place these in a library (conversion.h?).
Can you do this Java program please
Write equivalent expressions for each of the following by using De Morgan’s Law. A. !(x < 5) B. !(y > 2 && !found ) C. !(c == ‘r’ || (( y > 2) && !found ))
Your objective is to figure out a secret integer between 1 and N. You guess integers between 1 and N repeatedly. After each guess, you discover whether your guess equals the secret integer (and the game stops). Otherwise, you find out if the guess is hotter (closer to) or cooler (far away from) the secret number than your prior guess. Create an algorithm that can find the secret number in no more than 2 lg N guesses. Then devise an algorithm that discovers the secret number in no more than 1 lg N guesses.
There are a set of courses, each of them requiring a set of disjoint time intervals. For example, a course could require the time from 9am to 11am and 2pm to 3pm and 4pm to 5pm. You want to know, given a number K, if it’s possible to take at least K courses. You can only take one course at any single point in time (i.e. any two courses you choose can’t overlap). Show that the problem is NP-complete, which means that choosing courses is indeed a difficult thing in our life. Use a reduction from the Independent set problem.
Se x + learn.edgenuity.com/player/ nciples Semester A This algorithm is using a heuristic Mark this and return brute force approach heuristic tractable problem superpolynomial time O to approximate the best route. ↑ A mapping application cannot consider every factor to calculate the fastest route in a reasonable amount of time. Instead, the application uses an algorithm that considers only the most important factors such as total distance and traffic congestion along popular routes. MD A Save and Exit Next G < English Sign out ☆ * TIME REMAINING 58:34 Submit Mar 27 19 0 Kinley Heath X ⠀ + 10:25 0 4
Correct answer will be upvoted else Multiple Downvoted. Computer science. You are remaining on the OX-hub at point 0 and you need to move to an integer point x>0. You can take a few leaps. Assume you're at present at point (y might be negative) and hop for the k-th time. You can: either leap to the point y+k or on the other hand leap to the point y−1. What is the base number of hops you want to arrive at the point x? Input The main line contains a solitary integer t (1≤t≤1000) — the number of experiments. The solitary line of each experiment contains the single integer x (1≤x≤106) — the objective point. Output For each experiment, print the single integer — the base number of leaps to arrive at x. It very well may be demonstrated that we can arrive at any integer point x.
Hannah has a handful of keys, and a locked door. She knows one of the keys will work but doesn’t know which one it is. Therefore, she lays all the keys out in a line, and starts systematically trying each key in order until she finds the right one. What problem solving approach is she using? Group of answer choices trial and error a heuristic an algorithm insight
Whenever you mail a letter, you must decide how much postage to put on the envelope. You like to use this rule of thumb – use a stamp for every five sheets of paper or fraction thereof. For example, if you have 11 sheets of paper, then you use three stamps. Since you’re parsimonious, if an envelope requires more than three stamps, then you simply don’t mail the envelope. Show how the number of stamps per envelope would be calculated. Provide a solution in the form of pseudocode. Your pseudocode must read in appropriate data and print how many stamps to use.