public class Test{
public static void main(String[] args) {
int[] a = new int[args.length];
for (int i=0; i<args.length ;i++ ) {
a[i] = Integer.parseInt(args[i]);
print(a);
}
} private static void print(int[] a) {
for (int i=a.length-1; i>=0 ; i-- ) {
System.out.print(a[i] + " ");
}
System.out.println();
}
}
比如输入 java Test 2 5 45 5 6 4 56
输出结果前面咋会有那么多0呢?
换成char后就有很多空格,怎么搞的。。
public class Test{
public static void main(String[] args) {
int[] a = new int[args.length];
for (int i=0; i<args.length ;i++ ) {
a[i] = Integer.parseInt(args[i]);
}
print(a);
} private static void print(int[] a) {
for (int i=a.length-1; i>=0 ; i-- ) {
System.out.print(a[i] + " ");
}
System.out.println();
}
}
public class Randoms {
public static void main(String[] args) {
int[] a = new int[args.length];
for (int i=0; i<args.length ;i++ ) {
a[i] = Integer.parseInt(args[i]);
}
print(a);
} private static void print(int[] a) {
for (int i=0; i<a.length ; i++ ) {
System.out.print(a[i] + " ");
}
System.out.println();
}
}
public static void main(String[] args) {
int[] a = new int[args.length];
for (int i=0; i<args.length ;i++ ) {
a[i] = Integer.parseInt(args[i]);
}
print(a);//放到这儿就解决了!
} private static void print(int[] a) {
for (int i=a.length-1; i>=0 ; i-- ) {
System.out.print(a[i] + " ");
}
System.out.println();
}
}
运行结果:
若输入:2 3 4 5
输出:5 4 3 2
当没有给数组里的数赋值的时候,INT数组的默认是0,char数组默认是 空值是不是这样?
public static void main(String[] args) {
int[] a = new int[args.length];
for (int i=0; i<args.length ;i++ ) {
a[i] = Integer.parseInt(args[i]);
}
print(a);//这句应该在for循环外面
} private static void print(int[] a) {
for (int i=a.length-1; i>=0 ; i-- ) {
System.out.print(a[i] + " ");
}
System.out.println();
}
}