Question

我尝试复制没有指定元素的数组。让我们说我有以下数组：

int[] array = {1,2,3,4,5,6,7,8,9};
int[] array2 = new int[array.length-1];

我想要的是将数组复制到array2而不包含int＆＃34; 6＆＃34;所以它将包含＆＃34; {1,2,3,4,5,7,8,9}＆＃34;

我只想使用for循环，这是我到目前为止所做的但它不起作用

int[] array= { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
    int[] array2= new int[array.length - 1];
    int remove = 6;
    for (int i = 0; i < array2.length; i++) {
        if (array[i] != remove) {
            array2[i] = array[i];
        } else {
            array2[i] = array[i + 1];
            i++;
        }
    }
    for (int i = 0; i < array2.length; i++) {
        System.out.println(array2[i]);
    }

由于

Answer 1

int j = 0;
int count = 0; //Set this variable to the number of times the 'remove' item appears in the list
int[] array2 = new int[array.length - count];
int remove = 6;
for(int i=0; i < array.length; i++)
{
   if(array[i] != remove)
       array2[j++] = array[i];
}

Answer 2

您也可以使用Java 8的流和lambda表达式来完成它：

int[] array= { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
int[] array2 = Arrays.stream( array ).filter( value -> value != 6 ).toArray();
System.out.println( Arrays.toString( array2 ) );
// Outputs: [1, 2, 3, 4, 5, 7, 8, 9]

没有指定元素java的copy数组

2 个答案: