Commonly used classes in java——Arrays

Overview

java.util.Arrays This class contains various methods for manipulating arrays, such as sorting and search etc. All its methods are static methods and are very simple to call.

Methods for operating arrays

public static String toString(int[] a) : Returns the string representation of the specified array content.

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Example:

public static void sort (int[] a) : Sort the specified int array in ascending numerical order.

Example:

Exercise

Please use the relevant API to convert a All characters in a random string are arranged in ascending order and printed in reverse order.

Example:

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