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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X-Kingdom has trapped n number of soldiers of their opponent. They want to execute them. They created a strategy so that the prisoners will kill each other and at the end one prisoner will be alive and eventually released. As part of the process, they assigned each trapped soldier a sequence number starting from 1 and ending at n. If n = 5 and k = 2, then the safe position is 3. Firstly, the person at position 2 is killed, then person at position 4 is killed, then person at position 1 is killed. Finally, the person at position 5 is killed. So, the person at position 3 survives. If n = 7 and k = 3, then the safe position is 4. The people at positions 3, 6, 2, 7, 5, 1 are killed in order, and the person at position 4 survives. Input:n and k Output:Print the list of prisoners in reverse order from n to 1Then reverse the list to print it in correct order from 1 to nDisplay the position number who will survive. You must have to use circular doubly linked list for your solution.
Fixed Point iterations In this problem use your Python code. Consider the fixed point iteration method to f(x) = V9x? – 32x + 52 If the method fails enter "Failure" as your answer. = x with initial value xo = 4. a. With tolerance 0.007 and maximum number of iterations set to N = 8 the output of the method is b. With tolerance 0.04 and maximum number of iterations set to N 55 the output of the method is Note: You can earn partial creodit on this problem.
Find the error in the following argument: Theorem. All computer programs contain the same number of bugs. Proof. If we show that any set of n programs contains the same number of bugs, then we have proved the theorem. We argue by induction on n. If n=1 then in any set of 1 program, all the programs contain the same number of bugs, so the statement is true, in this case. Now suppose that for every set of programs containing less then n programs, all the programs have the same number of bugs. Let DD be a set of n programs p1,p2,…,pn. Now the set D1={p2,…,pn} contains n−1 programs and hence they all contain the same number of bugs, by the induction hypothesis. Similarly the set D2={p1,…,pn−1} contains n−1 programs and hence they all contain the same number of bugs. In particular p1 and pn contains the same number of bugs as the other programs in the set. Hence all the programs contain the same number of bugs.
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.
X-Kingdom has trapped n number of soldiers of their opponent. They want to execute them. They created a strategy so that the prisoners will kill each other and at the end one prisoner will be alive and eventually released. As part of the process, they assigned each trapped soldier a sequence number starting from 1 and ending at n. If n = 5 and k = 2, then the safe position is 3. Firstly, the person at position 2 is killed, then person at position 4 is killed, then person at position 1 is killed. Finally, the person at position 5 is killed. So, the person at position 3 survives. If n = 7 and k = 3, then the safe position is 4. The people at positions 3, 6, 2, 7, 5, 1 are killed in order, and the person at position 4 survives. Input:n and k Output:Print the list of prisoners in reverse order from n to 1Then reverse the list to print it in correct order from 1 to nDisplay the position number who will survive. You must have to use circular doubly linked list for your solution. You…
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
Imagine playing a number guessing game. A side is a number from 0 to Nhe's holding it, and the other side is trying to find that number by taking turns guessing. Number-holding side estimatehe has to offer one of the following three options in response to the party that did it:1-Your guess is correct, you found the number I kept (Game Over).2-Your estimate is wrong, but you are closer to the correct estimate than the previous estimate.3-the wrong estimate and the correct estimate are further away than the previous estimate.To find the estimated number in an environment where all the information is these, astrategy will be followed: Make a prediction (N/2) from the exact middle of N with 1 Begin:Find out the answer to your guess. [answer=answer_ogren (guess)]If the answer is equal to 1, the game is over, you can leave.If the answer is equal to 2, you are going in the right direction, keep the forecast direction;If you're heading for small numbers, the new N is now N/2.Make a guess…
Suppose an ATM has two sections of 1000 and 500 rupees note. There are 20 notes of 500 and 10 notes of 1000. You can withdraw the amount of either 1000 or 5,000. After each transaction, you also need to decrement and update the number of notes of each denomination (i.e. 500 and 1000). There are rules inside the ATM for dispatching the amount. If the amount is 1000 and number of notes of 500 are greater than 2 then dispatch 500 notes, otherwise check for 1000 notes and dispatch 1000 note. If both options are not possible then output “Transaction not possible” If the amount is 5000 and the number of notes of 500 is greater than 2 and notes of 1000 are greater than 4, then dispatch 2 notes of 500 and 4 notes of 1000, otherwise, if there are 5 notes of 1000, then dispatch 5 notes of 1000. If both options are not possible then output “Transaction not possible”
Bob uses the RSA cryptosystem to allow people to send him encrypted messages. He selects the parameters: p=3,q=17,e=3,d=11
Your goal is to guess a secret integer between 1 and N. You repeatedly guess integers between 1 and N. After each guess you learn if your guess equals thesecret integer (and the game stops). Otherwise, you learn if the guess is hotter (closer to)or colder (farther from) the secret number than your previous guess. Design an algorithm that finds the secret number in at most ~2 lg N guesses. Then design an algorithmthat finds the secret number in at most ~ 1 lg N guesses.
There are N people who will offer different M tests during the annual space tests. Take a closer look at the test results as you seek to create the ultimate galactic patrol. You want to select only the candidates over the limit of your galactic watch. A candidate is considered overweight if a candidate gains more than average points in at least one test. You must find the total number of candidates eligible for your galactic using java programming language. Input 1 22 32 23 Output 2