* numUnique returns the number of unique values in an array of doubles. * The array may be empty and it may contain duplicate values. * Unlike the previous questions, you can assume the array is sorted. * Your solution should contain at most one loop. You may not use recursion. * Your solution must not call any other functions. * Here are some examples (using "==" informally): E3 * * * * * == numUnique (new double[] { }) 1 == numUnique (new double [] {11}) 1 == numUnique (new double[] { 11, 11, 11, 11 }) 8 == numUnique (new double[] { 11, 11, 11, 11, 22, 33, 44, 44, 44, 44, 44, 55, 55, 66, 77, 88, 88 }) 8 == numUnique (new double [] { 11, 22, 33, 44, 44, 44, 44, 44, 55, 55, 66, 77, 88 }) * */ public static int numUnique (double[] list) {

* numUnique returns the number of unique values in an array of doubles. * The array may be empty and it may contain duplicate values. * Unlike the previous questions, you can assume the array is sorted. * Your solution should contain at most one loop. You may not use recursion. * Your solution must not call any other functions. * Here are some examples (using "==" informally): E3 * * * * * == numUnique (new double[] { }) 1 == numUnique (new double [] {11}) 1 == numUnique (new double[] { 11, 11, 11, 11 }) 8 == numUnique (new double[] { 11, 11, 11, 11, 22, 33, 44, 44, 44, 44, 44, 55, 55, 66, 77, 88, 88 }) 8 == numUnique (new double [] { 11, 22, 33, 44, 44, 44, 44, 44, 55, 55, 66, 77, 88 }) * */ public static int numUnique (double[] list) {

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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Question

/**
numUnique returns the number of unique values in an array of doubles.
* The array may be empty and it may contain duplicate values.
* Unlike the previous questions, you can assume the array is sorted.
*
* Your solution should contain at most one loop. You may not use recursion.
* Your solution must not call any other functions.
* Here are some examples
(using "==" informally):
*
*
*
*
*
<pre>
Ⓒ == numUnique (new
double[] { })
1 ==
numUnique (new double[] {11})
1 == numUnique (new double[] { 11, 11, 11, 11 })
8 == numUnique (new double[] { 11, 11, 11, 11, 22, 33, 44, 44, 44, 44, 44, 55, 55, 66, 77, 88, 88 })
8 == numUnique (new double[] { 11, 22, 33, 44, 44, 44, 44, 44, 55, 55, 66, 77, 88 })
* </pre>
*/
public static int numUnique (double[] list) {
return StdRandom.uniform (100); //TODO: fix this

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