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键盘录入：获得两个数据中的最大值*/import java.util.Scanner;class LianXi{ public static void main(String [] args){ Scanner sc =new Scanner(System.in); System.out.println("请输入第一个数："); int a = sc.nextInt(); System.out.println("请输入第二个数："); int b = sc.nextInt(); if(a>b){ Sys... 阅44 转0 评0 公众公开 16-02-18 18:13 |
键盘录入import java.util.Scanner;class LianXi{ public static void main(String [] args){ Scanner sc =new Scanner(System.in); System.out.println("请输入一个数"); int s = sc.nextInt(); System.out.println("你输入的是:"+s); } 阅292 转0 评0 公众公开 16-02-18 17:29 |
================练习题一===================class LianXi{ public static void main(String [] args){ int a =10; int b =20; int max = (a>b)?a:b; System.out.println(max); }结果：20================练习题二=================class LianXi{ public static void main(String [] args){ int a =10; int b =20; int c = 30; int... 阅128 转0 评0 公众公开 16-02-18 16:48 |
左移右移无符号右移 =================练习一===============class LianXi{ public static void main(String [] args){ System.out.println(3<<2); System.out.println(24>>2); System.out.println(24>>>2); System.out.println(-24>>2); System.out.println(-24>>>2); } 阅40 转0 评0 公众公开 16-02-18 16:26 |
面试题：实现两个整数变量的交换================方法一==================class LianXi{ public static void main(String [] args){ int a = 10; int b =20; System.out.println("a="+a+",b="+b); int c =a; a = b; b = c; System.out.println("a="+a+",b="+b); } 阅60 转0 评0 公众公开 16-02-18 16:06 |
位运算符class LianXi{ public static void main(String [] args){ int a = 3; int b = 4; System.out.println(a &b); //位与运算：有0则0 System.out.println(a | b); //位或运算：有1则1 System.out.println(a ^ b); //位异或运算：相同则0，不同则1 }结果：System.out.println(~a);//按位取反运算符 -4 } 阅36 转1 评0 公众公开 16-02-18 15:39 |
//& 逻辑与 System.out.println((a>b)&(a>c)); //false &false =flase System.out.println((a>b)&(a<c)); //false &true =false System.out.println((a<b)&(a>c)); //true &flase =false System.out.println((a<b)&(a<c)); //truee &true =true System.out.println("=... 阅43 转0 评0 公众公开 16-02-18 14:03 |
赋值运算符/*基本的赋值运算符：= 扩展赋值运算符：+= ,-=,*=,/=,%=*/class LianXi{ public static void main(String [] args){ int a=4; a+=10; System.out.println("a="+a); } 阅18 转0 评0 公众公开 16-02-18 11:44 |
//a=9,b=10,c=8 System.out.println("a="+a);System.out.println("b="+b);System.out.println("c="+c);++ --练习二*/class LianXi{ public static void main(String [] args){ int a=4; int b=(a++)+(++a)+(a*10); //4+ 6 +60 //a=5 a=6 System.out.println("a="+a); System.out.println("... 阅23 转0 评0 公众公开 16-02-18 11:14 |
