How to fill arrays.fill in java

1. Concept

Array elements can be filled with the same value.

2. Syntax

public static void fill(int[] a, form, to, int var)

3. Parameters

a: Array

form: Replacement start Position (inclusive)

to: replacement end position (exclusive)

var: value to be replaced

4. Example

String[] a9 = new String[6];
Arrays.fill(a9, "Hello");
Arrays.fill(a9, 3, 5,"World");

The result is

a9[] = {Hello,Hello,Hello,World,World,Hello};

The first parameter refers to the array of operation, the second and third parameters refer to inserting the fourth parameter in a certain area of ​​the array, the second parameter refers to the starting element The subscript (including the subscript), the third parameter refers to the end subscript (excluding the subscript), note: Java's array subscript starts from 0.

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