A method named duplicatesCount that takes an array of double values and returns the count of numbers duplicated (i.e. numbers that appear more than once) in the array, regardless of how many times each is duplicated. For example, if the array {1.1, 9.9, 4.4, 3.3, 3.3, 9.9, 2.2, 6.6, 7.7, 1.1, 9.9} is passed to this method, it must return 3 since the numbers 1.1, 9.9, and 3.3 appear more than once in the array. 2. A method named commonCount that takes two arrays of double values and returns the count of numbers that are common between the two arrays. If an element appears more than once it must not be counted twice. For example, if the arrays {1.1, 3.3, 4.4, 6.6, 1.1, 5.5, 3.3, 6.6} and {5.5, 9.9, 6.6, 8.8, 7.7, 9.9, 5.5) are passed to this method, it must return 2 since the numbers 6.6 and 5.5 are common between the two arrays. 3. A method named overlap that takes two arrays of double values and returns a new array that contains the concatenation of them overlapped. Note that the two arrays may not be of the same size. For example, if the arrays {1.1, 3.3, 2.2} and {9.9, 4.4, 5.5, 6.6}are passed to the method, it must return the array {1.1, 9.9, 3.3, 4.4, 2.2, 5.5, 6.6}. 4. A method named greatestRow that takes a 2-dimensional array and returns a 1- dimensional array which represents the row with the greatest sum in the 2-dimesional array. For example, if the following 2-D array is passed: 3.3 2.2 1.1 4.4 2.2 1.1 5.5 6.6 9.9 1.1 1.1 1.1 1.1 1.1 1.1 The method must return a reference to the array 5.5 6.6 9.9 1.1.

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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A method named duplicatesCount that takes an array of double values and returns the count of numbers duplicated (i.e. numbers that appear more than once) in the array, regardless of how many times each is duplicated. For example, if the array {1.1, 9.9, 4.4, 3.3, 3.3, 9.9, 2.2, 6.6, 7.7, 1.1, 9.9} is passed to this method, it must return 3 since the numbers 1.1, 9.9, and 3.3 appear more than once in the array. 2. A method named commonCount that takes two arrays of double values and returns the count of numbers that are common between the two arrays. If an element appears more than once it must not be counted twice. For example, if the arrays {1.1, 3.3, 4.4, 6.6, 1.1, 5.5, 3.3, 6.6} and {5.5, 9.9, 6.6, 8.8, 7.7, 9.9, 5.5) are passed to this method, it must return 2 since the numbers 6.6 and 5.5 are common between the two arrays. 3. A method named overlap that takes two arrays of double values and returns a new array that contains the concatenation of them overlapped. Note that the two arrays may not be of the same size. For example, if the arrays {1.1, 3.3, 2.2} and {9.9, 4.4, 5.5, 6.6}are passed to the method, it must return the array {1.1, 9.9, 3.3, 4.4, 2.2, 5.5, 6.6}. 4. A method named greatestRow that takes a 2-dimensional array and returns a 1- dimensional array which represents the row with the greatest sum in the 2-dimesional array. For example, if the following 2-D array is passed: 3.3 2.2 1.1 4.4 2.2 1.1 5.5 6.6 9.9 1.1 1.1 1.1 1.1 1.1 1.1 The method must return a reference to the array 5.5 6.6 9.9 1.1.

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