Java0715/src/main/java/com/sf/javase/day05/T.java

package com.sf.javase.day05;

import org.junit.jupiter.api.Test;

import javax.swing.*;
import java.util.Arrays;

/**
 * Arrays工具类的使用
 */
public class T {
    @Test
    public void t1(){
        int[] arr = new int[]{6,5,3,2,1};
        String s = Arrays.toString(arr);
        System.out.println(s);
        Arrays.sort(arr,2,5);
        Arrays.sort(arr);
        System.out.println(Arrays.toString(arr));

        // 二分查找
        int index = Arrays.binarySearch(arr, 15);
        System.out.println(index);

    }
}