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Write a static method called removeMatches that removes extra copies of a value that are adjacent to it in an ArrayList of Integer objects. For example, if a variable called list contains the following: [1, 3, 3, 3, 3, 15, 2, 2, 1, 19, 3, 42, 42, 42, 7, 42, 1]

Write a static method called removeMatches that removes extra copies of a value that are adjacent to it in an ArrayList of Integer objects. For example, if a variable called list contains the following: [1, 3, 3, 3, 3, 15, 2, 2, 1, 19, 3, 42, 42, 42, 7, 42, 1]

Database System Concepts
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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How do you do this? JAVA
**ArrayList Programming: Adjacent Duplicate Removal** **Description:** Write a static method called `removeMatches` that removes extra copies of a value that are adjacent to it in an `ArrayList` of `Integer` objects. For example, if a variable called list contains the following: `[1, 3, 3, 3, 3, 15, 2, 2, 1, 19, 3, 42, 42, 42, 7, 42, 1]` and we make the following call: `removeMatches(list);` Then the list should store the following values after the call: `[1, 3, 15, 2, 1, 19, 3, 42, 7, 42, 1]` Notice that the four occurrences of 3 that appear next to each other have been replaced with a single occurrence of 3, the two occurrences of 2 that appear next to each other have been replaced with a single 2, and the three occurrences of 42 that appear next to each other have been replaced with a single 42. Notice, however, that the list still contains three occurrences of 1, two occurrences of 3, and two occurrences of 42. That is because those duplicate values do not appear right next to each other in the list. You may not construct any extra data structures to solve this problem. You must solve it by manipulating the `ArrayList` you are passed as a parameter.
Transcribed Image Text:**ArrayList Programming: Adjacent Duplicate Removal** **Description:** Write a static method called `removeMatches` that removes extra copies of a value that are adjacent to it in an `ArrayList` of `Integer` objects. For example, if a variable called list contains the following: `[1, 3, 3, 3, 3, 15, 2, 2, 1, 19, 3, 42, 42, 42, 7, 42, 1]` and we make the following call: `removeMatches(list);` Then the list should store the following values after the call: `[1, 3, 15, 2, 1, 19, 3, 42, 7, 42, 1]` Notice that the four occurrences of 3 that appear next to each other have been replaced with a single occurrence of 3, the two occurrences of 2 that appear next to each other have been replaced with a single 2, and the three occurrences of 42 that appear next to each other have been replaced with a single 42. Notice, however, that the list still contains three occurrences of 1, two occurrences of 3, and two occurrences of 42. That is because those duplicate values do not appear right next to each other in the list. You may not construct any extra data structures to solve this problem. You must solve it by manipulating the `ArrayList` you are passed as a parameter.
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