Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
4th Edition
ISBN: 9780134787961
Author: Tony Gaddis, Godfrey Muganda
Publisher: PEARSON
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Chapter 16.2, Problem 16.6CP
Program Plan Intro
Sequential search:
- The sequential search
algorithm is the process to find an item in an array. - It compares each value and searching starts at the beginning of the array.
- In the searching process, the algorithm compares each item in an array and finds an item.
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def weighted_mse_grad(w, X, y, V):"""Calculate gradient of the weight MSE loss in the given point w
Parameters----------w: array_likeCurrent point, in which we want to evaluate gradient (vector with k+1 elements)X: array_likeDesign matrix with N rows and k+1 columnsy: array_likeVector with N observations of the target variableV: array_likeDiagonal matrix N x N, with the weightsReturns----------out: ndarrayvector of gradient, k+1"""# your code here
# TEST weighted_mse_grad()w = np.zeros(5)X = np.random.randn(10, 5)y = np.ones(10)V = np.diag(np.ones(10))
L_grad = weighted_mse_grad(w, X, y, V)assert(L_grad.shape == (5,))
w = np.zeros(5)X = np.eye(5)y = np.ones(5)V = np.diag(np.ones(5))L_grad = weighted_mse_grad(w, X, y, V)assert(L_grad.shape == (5,)), 'The shape of the output on the test case is wrong'assert(np.allclose(5 * L_grad,- y * 2)), 'The values of the output on the test case is wrong'
You are given 4 items as {value, wveightpairs in this format ({20, 5}, {60, 20}, {25, 10},{X,25}}You can assume that the array is sorted based on the
capacity of knapsack is 50. The item no. 4 (whose weightis 25 ) is taken fractionally to fill upto the knapsack capacity. That fraction is represented in format. What is the
ratio. The
lowest possible value of b?
For the question above, assume the total value stored in the knapsack is 135 after you have filled upto the knapsack capacity. What is the value of X(in other words, the valueo
the item no. 4)?
Give your arSwer to at least two decimal places
Consider the following list: L = 387, 690, 234, 435, 567, 123, 441. The number of components n = 7, the number of numbers l = 3, and the radix r = 10 are used here. This indicates that radix sort would require 10 bins and would arrange in three passes.
demonstrates the radix sort passes over the array. It is believed that each key is tossed face down into the bin. When the keys are gathered in order from each bin at the conclusion of each run, the list of keys in each bin is flipped upside down and added to the output list.
Chapter 16 Solutions
Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
Ch. 16.1 - Prob. 16.1CPCh. 16.1 - Prob. 16.2CPCh. 16.1 - Prob. 16.3CPCh. 16.1 - Prob. 16.4CPCh. 16.2 - Prob. 16.5CPCh. 16.2 - Prob. 16.6CPCh. 16.2 - Prob. 16.7CPCh. 16.2 - If a sequential search is performed on an array,...Ch. 16.3 - Prob. 16.9CPCh. 16.3 - Prob. 16.10CP
Ch. 16.3 - Prob. 16.11CPCh. 16.3 - Prob. 16.12CPCh. 16.3 - Prob. 16.13CPCh. 16.3 - Prob. 16.14CPCh. 16.3 - Let a[ ] and b[ ] be two integer arrays of size n....Ch. 16.3 - Prob. 16.16CPCh. 16.3 - Prob. 16.17CPCh. 16.3 - Prob. 16.18CPCh. 16 - Prob. 1MCCh. 16 - Prob. 2MCCh. 16 - Prob. 3MCCh. 16 - Prob. 4MCCh. 16 - Prob. 5MCCh. 16 - Prob. 6MCCh. 16 - Prob. 7MCCh. 16 - Prob. 8MCCh. 16 - Prob. 9MCCh. 16 - Prob. 10MCCh. 16 - True or False: If data is sorted in ascending...Ch. 16 - True or False: If data is sorted in descending...Ch. 16 - Prob. 13TFCh. 16 - Prob. 14TFCh. 16 - Assume this code is using the IntBinarySearcher...Ch. 16 - Prob. 1AWCh. 16 - Prob. 1SACh. 16 - Prob. 2SACh. 16 - Prob. 3SACh. 16 - Prob. 4SACh. 16 - Prob. 5SACh. 16 - Prob. 6SACh. 16 - Prob. 7SACh. 16 - Prob. 8SACh. 16 - Prob. 1PCCh. 16 - Sorting Objects with the Quicksort Algorithm The...Ch. 16 - Prob. 3PCCh. 16 - Charge Account Validation Create a class with a...Ch. 16 - Charge Account Validation Modification Modify the...Ch. 16 - Search Benchmarks Write an application that has an...Ch. 16 - Prob. 8PCCh. 16 - Efficient Computation of Fibonacci Numbers Modify...
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