qq_44256373的博客

public class Test{ public static void main(String args[]){ //数据类型转换问题 //1、自动转换 byte b = 10; int i = b; System.out.println(i);//=10 //2、强制转换 int a = (int)5.5; System.out.println(a);//...

1、借助中转变量法（最为常用）int a = 3,b = 4;int temp = a;a = b;b = temp;System.out.println(a);System.out.println(b);2、用和交换法int a = 3,b = 4;a = a+b;b = a-b;a = a-b;System.out.println(a);System....

public class Test04{ public static void main(String[] args){ //char[] str = new char[]{'我','好','喜','欢','你','，','大','宝','宝'}; //char ele = '好'; //int a = getFirstIndex(str,ele); //int a = get...

import java.util.Scanner;public class LianXi{ public static void main(String[] args){ /**********************************************************/ //1.求10的阶乘(阶乘 5！=1*2*3*4*5) /*int a = 1; fo...