Arrays.fill(temp, (byte) 0)
时间: 2023-07-30 07:10:05 浏览: 30
这行代码是用来将一个byte类型的数组temp中的所有元素都设置为0。具体来说,Arrays.fill()是Java中的一个工具类方法,可以用来填充一个数组中的所有元素,其语法如下:
```
public static void fill(byte[] a, byte val)
```
其中,a是需要被填充的数组,val是要填充的值。例如,上述代码就是将temp数组中的所有元素都设置为0。此方法还有其他的重载形式,可以填充不同类型的数组,如int、long、float、double等。
相关问题
Arrays.fill
Arrays.fill is a method in Java that is used to fill an array with a specific value. It is a convenient way to initialize an array to a specific value or reset the contents of an array to a default value.
The method takes three arguments: the array to be filled, the starting index from which to fill the array, and the ending index up to which the array should be filled. The syntax for the method is as follows:
Arrays.fill(array, startIndex, endIndex, value);
The startIndex is the index at which to start filling the array and the endIndex is the index up to which the array should be filled. The value parameter specifies the value with which to fill the array.
Here's an example of using the Arrays.fill method to initialize an array with a specific value:
int[] myArray = new int[5];
Arrays.fill(myArray, 0, 5, 10);
This code creates a new int array with 5 elements, and then fills it with the value 10 starting from index 0 and ending at index 4.
Note that if the startIndex is greater than or equal to the endIndex, the method will not modify the array. Also, if the endIndex is greater than the length of the array, an ArrayIndexOutOfBoundsException will be thrown.
arrays.fill方法
`Arrays.fill()`是Java中的一个静态方法,用于将指定数组中的每个元素都设置为指定的值。它接受三个参数:数组、起始索引和结束索引(不包括)以及要设置的值。
语法:
```
public static void fill(int[] a, int val)
public static void fill(int[] a, int from, int to, int val)
public static void fill(boolean[] a, boolean val)
public static void fill(boolean[] a, int from, int to, boolean val)
public static void fill(byte[] a, byte val)
public static void fill(byte[] a, int from, int to, byte val)
public static void fill(char[] a, char val)
public static void fill(char[] a, int from, int to, char val)
public static void fill(double[] a, double val)
public static void fill(double[] a, int from, int to, double val)
public static void fill(float[] a, float val)
public static void fill(float[] a, int from, int to, float val)
public static void fill(long[] a, long val)
public static void fill(long[] a, int from, int to, long val)
public static void fill(short[] a, short val)
public static void fill(short[] a, int from, int to, short val)
```
其中,`a`是要填充的数组,`val`是要填充的值,`from`是起始索引,`to`是结束索引(不包括)。
示例:
```
int[] arr = new int[5];
Arrays.fill(arr, 5);
System.out.println(Arrays.toString(arr));
// 输出 [5, 5, 5, 5, 5]
int[] arr2 = new int[10];
Arrays.fill(arr2, 2, 7, 8);
System.out.println(Arrays.toString(arr2));
// 输出 [0, 0, 8, 8, 8, 8, 2, 2, 2, 2]
```
在第一个示例中,我们将一个长度为5的整型数组填充为值5。在第二个示例中,我们将一个长度为10的整型数组中从索引2到索引7(不包括)的元素填充为值8。