Question

JAVA怎么合并两个数组呢?

比如 int[] s ={4, 7, 2, 3, 1 ,10, 6, 5 ,9 ,8};
int[] s2 = {4,6,2,10,24,9,30,7};
怎么合成一个写个方法？有可以直接处理的函数吗?

Answer 1

int[] s ={4, 7, 2, 3, 1 ,10, 6, 5 ,9 ,8};
int[] s2 = {4,6,2,10,24,9,30,7};
int a[]=new int[s.length+s2.length]; //定义一个长度为s加s2长度的数组
System.arraycopy(s,0,a,0,s.length); //将数组s的元素复制到a中
System.arraycopy(s2,0,a,s.length,s2.length); //将数组s2的元素复制到a中
for(int i=0;i<a.length;i++) //输出新的数组元素a
System.out.println(a[i]);

Answer 2

思路:伪代码..

int[] s ={4, 7, 2, 3, 1 ,10, 6, 5 ,9 ,8};
int[] s2 = {4,6,2,10,24,9,30,7};

int[20] result={0};

循环result,把s和s2的内容填写进你的result就ok...

Answer 3

int a[]={12,23,15,11,56,51};
int b[]={4,2,50,78,90};

ArrayList<Integer> alist=new ArrayList<Integer>(a.length+b.length);

for (int j = 0; j < a.length; j++) {
alist.add(a[j]);
}
for (int k = 0; k < b.length; k++) {
alist.add(b[k]);
}
int c[] =new int[alist.size()];
for(int i=0; i<alist.size();i++)
{
c[i]=alist.get(i);
}