Answered: If we wanted to find the value (1 or 0)…

If we wanted to find the value (1 or 0) of the third bit from the right (bitNum = 2) of variable x, we should: O int bit = x & 4; int bit (x >> 3) & 1; O int bit =x >> 3: O int bit (x >> 2) & 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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Not pseudocode Suppose the economies of the world use a set of currencies C1, . . . , Cn; think of these as dollars, pounds, Bitcoin, etc. Your bank allows you to trade each currency Ci for any other currency Cj, and finds some way to charge you for this service. Suppose that for each ordered pair of currencies (Ci, Cj ), the bank charges a flat fee of fij > 0 dollars to exchange Ci for Cj (regardless of the quantity of currency being exchanged). Describe an algorithm which, given a starting currency Cs, a target currency Ct, and a list of fees fij for all i, j ∈ {1, . . . , n}, computes the cheapest way (that is, incurring the least in fees) to exchange all of our currency in Cs into currency Ct. Also, justify the its runtime. [We are expecting a description of the algorithm, as well as a brief justification of its runtime.]
1. Prof. Nigma at the Portland Institute of Technology (which still doesn't exist) was thrilled with your previous work and hired you again to analyze the algorithm given here in pseudocode! As usual, however, Prof. Nigma neglected to explain what the algorithm does. def Q(A[0..n - 1]) // Input: Array A[0..n-1] of n real numbers, for n ≥1 if n = 1 return A[0] else temp = Q(A[0..n - 2]) if temp ≤ A[n 1] return temp else return A[n - 1] (a) What does this algorithm compute? Give an English description of what value it returns on a given input array, along with a convincing explanation of your answer. (You do not need to give examples as part of your answer, but as always, you are welcome to include examples along with the English description, if it would make your answer clearer.) (b) What is the complexity class of this algorithm? To find it, first state a re- currence for the time complexity of the algorithm, then solve it using one of the methods presented in class for solving…
Code it output needYou are given a m x n 2D grid initialized with these three possible values: -1: A wall or an obstacle. 0: A gate. INF: Infinity means an empty room. We use the value 2^31 - 1 = 2147483647 to represent INF as you may assume that the distance to a gate is less than 2147483647.Fill the empty room with distance to its nearest gate.If it is impossible to reach a gate, it should be filled with INF. For example, given the 2D grid: INF -1 0 INF INF INF INF -1 INF -1 INF -1 0 -1 INF INFAfter running your function, the 2D grid should be: 3 -1 0 1 2 2 1 -1 1 -1 2 -1 0 -1 3 4""" def walls_and_gates(rooms): for i in range(len(rooms)): for j in range(len(rooms[0])): if rooms[i][j] == 0: dfs(rooms, i, j, 0) def dfs(rooms, i, j, depth): if (i < 0 or i >= len(rooms)) or (j < 0 or j >= len(rooms[0])): return # out of bounds if rooms[i][j] < depth:…
Answer it is c++ only Chef recorded a video explaining his favorite recipe. However, the size of the video is too large to upload on the internet. He wants to compress the video so that it has the minimum size possible. Chef's video has N frames initially. The value of the th frame is A₁. Chef can do the following type of operation any number of times: • Choose an index i (1 ≤ i ≤ N) such that the value of the ith frame is equal to the value of either of its neighbors and remove the ith frame. Find the minimum number of frames Chef can achieve. Input 1 1 5 output 1
this is for MPI communication using c++ I need the code for ring communication using mpi Let us assume that k people sit at a round table, the first people produce a random number and send it to the second person; the second people produce a random number, add it up to the received number and send the result to the third people. The procedure continues till the last people aggregate all random numbers and send them back to the first people. The first people print off the aggregated result.
15. To convert hexadecimal no. 32 b16 to octal choose the correct sequence of computation.. * 32 b16 (2*1s) + (3*16s) = 50; 64s 8s 1s, 8s <= 50, 50/8s = 6; 1s<-6, 6/1s= 6,6- (6*1s)=0. O 32 b16 (2+1) + (3*16s) = 50; 64s 8s 1s, 8s <= 50, 50/8s = 6; 1s<=6, 6/1s= 6, 6- (6*1s)=0. = O 32 b16 (2*1s) + (3*16s) = 50; 8s 1s, 8s <= 50, 50/8s = 6; 1s<=6, 6/1s= 6, 6- (6*1s)=0. 32 b16 (2*1s) + (3*16s) = 50; 64s 8s 1s, 8s <= 50, 50/8s = 6; 1<-6, 6/1s= 6, 6- (6*1s)=0. ATO(ALL THE OPTIONS) O NATO(Not among the options)
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The GMP library, using C or C++ The prefered solution is to use the Sage library. 2 Fermat test 1. Implement the Fermat test of primality with small integers. 2. Write a function to generate random k-bit prime numbers. 3 RSA 1. Write the key-generation function function of RSA. The function should generate two random primes p and q of size k/2 bits. 2. Implement the RSA encryption function 3. Implement the RSA decryption function 4. Check that decryption works
Write programs using QtSpim to do the following 1) int x=1; x=x+2; 2) x=5; if (x>0) x=x+1; else x=x-1; 3) int sum=0; int[] a={1,2,3,4,5}; for (int i=0;i<5;i++) sum=sum+a[i];
Consider the code presented below: y = (1, 9, 2) y[1]=8 print(y) What do we get when we execute this code? Answer:
Answer it is c++ only Chef recorded a video explaining his favorite recipe. However, the size of the video is too large to upload on the internet. He wants to compress the video so that it has the minimum size possible. Chef's video has N frames initially. The value of the th frame is A₁. Chef can do the following type of operation any number of times: • Choose an index i (1 ≤ i ≤ N) such that the value of the ith frame is equal to the value of either of its neighbors and remove the ith frame. Find the minimum number of frames Chef can achieve. Input 1 1 5 output 1
Use C language to write a program