Recently, I have used the Arrays class to do projects. I will sort it out here. I hope everyone can master Arrays.
1.Arrays class overview
A tool class that operates on arrays.
Provides functions such as sorting and searching.
2. Member Methods
public static String toString(int[] a)
public static void sort(int[] a)
public static int binarySearch(int[] a,int value)
package com;import java.util.Arrays;/** * Overview of Arrays class and common methods* Tool class that operates on arrays. * Provides functions such as sorting, searching, etc. * Member method * public static String toString(int[] a) Convert an array of int type into a string * public static void sort(int[] a) Sorting the array, using quick sort internally * public static int binarySearch(int[] a,int key) binary search method * @author Xu Weiwei* */public class ArraysDemo { public static void main(String[] args) { int[] array = {3,44,2,546,74}; //public static String toString(int[] a) Convert an array of int type into a string System.out.println(Arrays.toString(array));//[3, 44, 2, 546, 74] //public static void sort(int[] a) sorts arrays, using quick sorting internally Arrays.sort(array); System.out.println(Arrays.toString(array));//[2, 3, 44, 74, 546] //public static int binarySearch(int[] a,int key) binary search method int index = Arrays.binarySearch(array, 5); System.out.println(index);//-3 }}Thank you for reading, I hope it can help you. Thank you for your support for this site!