By Roselyn Teukolsky, M.S.

The recent fourth version of Barron’s complicated Placement laptop technological know-how try guidance handbook has been up-to-date with a brand new case examine. This new GridWorld Case learn might be verified at the AP examination beginning in may well 2008. The guide offers 4 full-length AP perform tests, each one for degrees A and AB. of those tests are offered as diagnostic assessments, with charts detailing the themes for every query. All 4 version assessments have questions replied and defined. potential attempt takers also will locate an in depth topic assessment, beginning with a evaluate of Java 5.0 and happening to hide all issues puzzled in either the extent A and point AB checks. There are new sections on garage of numbers and random numbers. The guide can be bought by myself, or with an not obligatory CD-ROM, with its extra full-length version AP checks, one point A and the opposite point AB, see Barron’s ISBN 0-7641-9350-3.
*The CD-ROM isn't integrated with the electronic model of this e-book.

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Extra info for AP Computer Science: Levels A and AB

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Dn , where d1 = arr[0], d2 = arr[1], . . length-1]. (D) It builds an integer of the form d1 d2 d3 . . length-2], . . , dn = arr[0]. (E) It converts the elements of arr to base-10. GO ON TO THE NEXT PAGE. 22 Practice Exams Questions 26 and 27 refer to the search method in the Searcher class below. public class Searcher { private int[] arr; //Constructor. Initializes arr with integers. arr[last] sorted in ascending order. * Postcondition: Returns index of key in arr. If key not in arr, * returns -1.

Postcondition: All instances of StockItem with identity // number idNum have been completely removed // from the shelf. This StockItem, however, // is still in myStockList. public void removeAll(int idNum) { /* to be implemented in this part */ } } Write the Store method removeAll, which searches for the StockItem in myStockList whose identity number matches idNum and removes all instances of that item from the shelf. You may assume that myStockList does contain the StockItem with identity number idNum.

Public class Searcher { private int[] arr; //Constructor. Initializes arr with integers. arr[last] sorted in ascending order. * Postcondition: Returns index of key in arr. If key not in arr, * returns -1. */ public int search(int first, int last, int key) { int mid; while (first <= last) { mid = (first + last) / 2; if (arr[mid] == key) //found key, exit search return mid; else if (arr[mid] < key) //key to right of arr[mid] first = mid + 1; else //key to left of arr[mid] last = mid - 1; } return -1; //key not in list } } 26.

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