...将数组a中索引位置0~3的元素复制到数组b中,最后将a和b数组中元素输 ...答:String[] a = {"a","b","c","d","e"};String[] b = {"1","2","3","4","5"};System.arraycopy(a, 0, b, 0,3);for (int i = 0; i < a.length; i++) { System.out.print(a[i]);} System.out.println();for (int i = 0; i < b.length; i++) { Sy...
java怎么从数组a中随机选取几个数放入数组b中,急答:public class vder { public static void main(String[] args) { int a[]={1,2,3,4,5,6,7,8,9,0};boolean r[]=new boolean[a.length];Random random = new Random();int m = 5; //要随机取的元素个数 if(m > a.length || m < 0)return;int n = 0;while(true){ in...
JAVA编程数组复制,将数组a1的前5个元素赋给b1答:public class SetArray { public static void main(String[] args) { int[] a = {1, 2, 3, 4, 5, 6, 7};int[] b = {1, 1, 8 ,9 ,10, 11, 12};for(int i = 0; i<5; i++) { b[i] = a[i];System.out.println(b[i]);} } } ...