Java 的 Array.fill
时间: 2024-05-27 21:13:09 浏览: 13
() 方法是干什么用的?
Java的Array.fill()方法用于将数组的所有元素填充为指定的值。具体来说,该方法需要接收一个数组和一个要填充的值作为参数,并将数组的所有元素都设置为指定的值。例如,如果我们有一个包含10个整数的数组,想把它们全部设置为0,可以使用如下代码:
int[] arr = new int[10];
Arrays.fill(arr, 0);
相关问题
java中arrays.fill的用法
arrays.fill() 是 Java 中的数组填充方法,可以用指定的值填充整个数组或某一部分。语法为:arrays.fill(array, value)。其中,array 表示要填充的数组,value 表示填充的值。例如,如果要将一个整型数组 arr 中的所有元素都填充为 0,可以使用以下代码:arrays.fill(arr, 0)。
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.
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