[上]JAVA学习系列模块五第三章109.数组练习_按照指定格式输出元素
视频
[vbilibili]【尚硅谷2024最新JAVA入门视频教程（上部）JAVA零基础入门教程】 https://www.bilibili.com/video/BV1YT4y1H7YM/?p=109&share_source=copy_web&vd_source=85f561e7442caa320f4a23b57edee129[/vbilibili]
笔记
需求:
1.定义一个数组 int[] arr = {1,2,3,4}
2.遍历数组,输出元素按照[1,2,3,4]
public class Demo04PrintRegex {
public static void main(String[] args) {
int[] arr = {1, 2, 3, 4};
System.out.print("[");
for (int i = 0; i < arr.length; i++) {
if (i == arr.length - 1) {
System.out.print(arr[i] + "]");
} else {
System.out.print(arr[i] + ",");
}
}
}
}