Ints concat() function | Guava | Java

Guava’s Ints.concat() method is used to combine the arrays passed as parameters into a single array. This method returns the values from each provided array combined into a single array. For example, concat(new int[] {a, b}, new int[] {}, new int[] {c} returns the array {a, b, c}.

Syntax:

public static int[] concat(int[]... arrays)

Parameters: This method takes arrays as parameter which represents zero or more int arrays.

Return Value: This method returns a single array containing all the values from the source arrays, in order.

Example 1:

// Java code to show implementation of
// Guava's Ints.concat() method

import com.google.common.primitives.Ints;
import java.util.Arrays;

class GFG {

    // Driver's code
    public static void main(String[] args)
    {

        // Creating 2 Integer arrays
        int[] arr1 = { 1, 2, 3, 4, 5 };
        int[] arr2 = { 6, 2, 7, 0, 8 };

        // Using Ints.concat() method to combine
        // elements from both arrays into a single array
        int[] res = Ints.concat(arr1, arr2);

        // Displaying the single combined array
        System.out.println("Combined Array: "
                           + Arrays.toString(res));
    }
}

Output:

Combined Array: [1, 2, 3, 4, 5, 6, 2, 7, 0, 8]

Example 2:

// Java code to show implementation of
// Guava's Ints.concat() method

import com.google.common.primitives.Ints;
import java.util.Arrays;

class GFG {

    // Driver's code
    public static void main(String[] args)
    {

        // Creating 4 Integer arrays
        int[] arr1 = { 1, 2, 3 };
        int[] arr2 = { 4, 5 };
        int[] arr3 = { 6, 7, 8 };
        int[] arr4 = { 9, 0 };

        // Using Ints.concat() method to combine
        // elements from both arrays into a single array
        int[] res = Ints.concat(arr1, arr2, arr3, arr4);

        // Displaying the single combined array
        System.out.println("Combined Array: "
                           + Arrays.toString(res));
    }
}

Output:

Combined Array: [1, 2, 3, 4, 5, 6, 7, 8, 9, 0]

Reference: https://google.github.io/guava/releases/22.0/api/docs/com/google/common/primitives/Ints.html#concat-int:A…-