开发验证码
package com.itheima.test;
public class test3{
public static void main(string[] args){
char[] chs = char[52];
for(int i=0;i<chs.length;i++){
if(i<25){
char[i]=(char)(97*i);
}else{
char[i]=(char)(65*i-26);
}
}
String result ="";
Random r = new Random();
for(int i=0;i<4;i++){
int randomIndex = r.nextInt(chs.length);
result = result + chs[randomIndex];
result = result +number;
System.out.println(result);
}
}
数组元素的复制
package com.itheima.test;
public class test4{
public static void main(string[] args){
int[] arr={1,2,3,4,5};
int[] newArr = new int[arr.length];
for(int i=0;i<arr.length;i++){
newArr[i]=arr[i];
}
for(int i=0;i<newArr.;ength;i++){
System.out.println(newArr[i]);
}
}
}
标签：总结,int,newArr,一周,char,chs,result,public From： https://www.cnblogs.com/yetang307/p/16583770.html