package hello;
public class Hello{//数组的用法
public static void main(String arge[]) {
int a[][];
a = new int[2][3];
float b[];
b = new float[12];
int c[] = new int[23];
double d[] = new double[12];
int e[][] = new int[3][];
e[0] = new int[12];
e[1] = new int[13];
e[2] = new int[14];
int size = 30;
double number[] = new double[size];//与c语言不同的地方
//length的使用,计算数组的长度
float as[] = new float[12];
System.out.println(as.length);
int bs[][] = new int[13][12];
System.out.println(bs.length);
//数组初始化
float boy[] = {21.3f,23.89f,2.0f,23f,778.98f};//第一种
float boy1[] = new float[5];//第二种
boy[0]=21.3f;
int cs[][] = {{1},{1,1},{1,2,1},{1,3,3,1},{1,4,6,4,1}};
}
}