Question

如果我有两个阵列。

int[] one; int[] two;

我希望将这两个数组添加到单个数组中以最简单的方式，这意味着 `int [] combine = //我能在这做什么？

Answer 1

int [][] A={{1,2,4},{2,4,5},{2,4,4}};   
int [][] B={{3,5,4},{0,1,9},{6,1,3}};   
int i,j;
int [][] C=new int[3][3];
int X=A.length;
for(i=0; i<X; i++)
{for(j=0; i<X; i++)
    {
    C[i][j]=A[i][j]+B[i][j];
       }
}
for(i=0; i<X; i++)
{
    for(j=0; j<X; j++){
        System.out.print(C[i][j]+"   ");
    }
    System.out.println();

    }

Answer 2

使用Apache Commons Lang库中的ArrayUtils：

int[] combine = ArrayUtils.addAll(one, two);

http://commons.apache.org/lang/api-2.5/org/apache/commons/lang/ArrayUtils.html#addAll(int[], int[])

Answer 3

使用ArrayUtils class方法addAll将给定数组的所有元素添加到新数组中。新数组包含array1的所有元素，后跟所有元素数组2。返回数组时，它始终是一个新数组。

ArrayUtils.addAll(array1,array2);

<强>返回：新的int[] array

Answer 4

int[] one = new int[]{1, 2, 3, 4, 5};
int[] two = new int[]{3, 7, 8, 9};
int[] result = new int[one.length + two.length];
System.arraycopy(one, 0, result, 0, one.length);
System.arraycopy(two, 0, result, one.length, two.length);
System.out.println("Arrays.toString(result) = " + Arrays.toString(result));

Answer 5

这是执行此操作的一个选项...

 int[] combine= new T[one.length+two.length];  
 System.arraycopy(one, 0, combine, 0, one.length); 
 System.arraycopy(two, 0, combine, one.length, two.length);

Answer 6

试试这个：

int [][] A={{1,2,4},{2,4,5},{2,4,4}};   
int [][] B={{3,5,4},{0,1,9},{6,1,3}};   
int i,j;
int [][] C=new int[3][3];
int X=A.length;
int y=B.length;
for(i=0; i<X; i++)
{
    for(j=0; i<Y; i++)
    {
        C[i][j]=A[i][j]+B[i][j];
    }
}
for(i=0; i<X; i++)
{
    for(j=0; j<X; j++)
    {
        System.out.print(C[i][j]+"   ");
    }
    System.out.println();
}

Answer 7

试试这个：

int size1 = one.length;
int size2 = two.length;
int[] three = new int[size1 + size2];

for(int i = 0; i < one.length; i++)
     three[i] = one[i];

for(int i = two.length; i < one.length + two.length; i++)
     three[i] = one[i];

Answer 8

int[] combined = new int[one.length()+two.length()];
for(int i=0; i<one.length(); ++i){
combined[i] = one[i];}

for(int i=one.length(); i<combined.length(); ++i){
 combined[i] = two[i-one.length()];
}

代码未经测试。请注意，您可以通过展开length（）方法进行一些优化。

Answer 9

int[] combinedArrays = new int[one.length + two.length];
int index = 0;
for (int i : one) {
    combinedArarys[index] = one[i];
    index++;
}

for (int i : two) {
    two[index] = two[i];
    index++;
}

我有两个数组我想在One.But中添加两个数组怎么样？

9 个答案: