二进制，八进制，十六进制的使用

package com.itheima.method1;

public class demo {
    
    public static void main(String[] args) {
        System.out.println(10);
        System.out.println(0b10);
        System.out.println(010);
        System.out.println(0x10);

        
        int a=10;
        int b=20;

        a=a^b;
        b=a^b;
        a=a^b;
        System.out.println("a="+a);
        System.out.println("b="+b);

        
        int[] arr={19,28,37,46,50};
        for (int start=0, end=arr.length-1;start