Java Examples - sorted array elements and Find

Java Examples

The following example demonstrates how to use sort () method to sort an array of Java, and how to use binarySearch () method to find elements in the array, here we define printArray () method to print an array:

/*
 author by w3cschool.cc
 文件名：MainClass.java 
 */

import java.util.Arrays;

public class MainClass {
   public static void main(String args[]) throws Exception {
      int array[] = { 2, 5, -2, 6, -3, 8, 0, -7, -9, 4 };
      Arrays.sort(array);
      printArray("数组排序结果为", array);
      int index = Arrays.binarySearch(array, 2);
      System.out.println("元素 2  在第 " + index + " 个位置");
   }
   private static void printArray(String message, int array[]) {
      System.out.println(message
      + ": [length: " + array.length + "]");
      for (int i = 0; i < array.length; i++) {
         if(i != 0){
            System.out.print(", ");
         }
         System.out.print(array[i]);                     
      }
      System.out.println();
   }
}

The above code is run output is:

数组排序结果为: [length: 10] -9, -7, -3, -2, 0, 2, 4, 5, 6, 8
元素 2 在第 5 个位置

Java Examples