1 package bitOperation; 2 3 import java.util.Scanner; 4 5 /** 6 * @author zsh 7 * @company wlgzs 8 * @create 2019-02-14 16:18 9 * @Describe 题5：将整数的奇偶位交换 10 */ 11 public class Main5 { 12 public static void main(String[] args) { 13 Scanner scanner = new Scanner(System.in); 14 int n = scanner.nextInt(); 15 //奇数位 16 int c = n & 0x55555555; //0101 0101 ... 17 //偶数位 18 int d = n & 0xaaaaaaaa; //1010 1010 ... 19 //奇数位左移1，偶数位右移1，然后异或 20 System.out.println((c<<1)^(d>>1)); 21 } 22 }