Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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[画像:```java public class PS07D { /** * Write the method catch22(). * * Given an array of ints, return * true if the array contains a 2 * next to a 2, anywhere in the array. * * Examples: * catch22({1, 2, 2}) returns true * catch22({1, 2, 1, 2}) returns false * catch22({2, 1, 2}) returns false * * @param nums the array to search. * @return true if two adjacent 2s are in the array. */ // TODO - Write the catch22 method here. public boolean catch22(int[] nums) { return false; } } ``` ### Explanation - **Class Declaration**: The code defines a public class named `PS07D`. - **Method Description**: The method `catch22()` is described using a comment block. This method is tasked with checking an integer array for two adjacent '2' values. - **Examples**: The comments provide examples of how the method should behave: - `catch22({1, 2, 2})` returns `true` - `catch22({1, 2, 1, 2})` returns `false` - `catch22({2, 1, 2})` returns `false` - **Parameters and Return Values**: - **@param nums**: Describes the parameter `nums` as the array to search. - **@return**: Specifies that the method returns a boolean value (`true` or `false`) based on the presence of adjacent '2's. - **Method Definition**: The placeholder method `catch22` is defined as returning a `boolean` value. It accepts an integer array `nums` as a parameter. Currently, it always returns `false`, indicating that the implementation is incomplete and needs to be written.]
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Transcribed Image Text:```java public class PS07D { /** * Write the method catch22(). * * Given an array of ints, return * true if the array contains a 2 * next to a 2, anywhere in the array. * * Examples: * catch22({1, 2, 2}) returns true * catch22({1, 2, 1, 2}) returns false * catch22({2, 1, 2}) returns false * * @param nums the array to search. * @return true if two adjacent 2s are in the array. */ // TODO - Write the catch22 method here. public boolean catch22(int[] nums) { return false; } } ``` ### Explanation - **Class Declaration**: The code defines a public class named `PS07D`. - **Method Description**: The method `catch22()` is described using a comment block. This method is tasked with checking an integer array for two adjacent '2' values. - **Examples**: The comments provide examples of how the method should behave: - `catch22({1, 2, 2})` returns `true` - `catch22({1, 2, 1, 2})` returns `false` - `catch22({2, 1, 2})` returns `false` - **Parameters and Return Values**: - **@param nums**: Describes the parameter `nums` as the array to search. - **@return**: Specifies that the method returns a boolean value (`true` or `false`) based on the presence of adjacent '2's. - **Method Definition**: The placeholder method `catch22` is defined as returning a `boolean` value. It accepts an integer array `nums` as a parameter. Currently, it always returns `false`, indicating that the implementation is incomplete and needs to be written.
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