Java program to create a sorted merged array of two unsorted arrays

To create a sorted merged array of two unsorted arrays, at first, let us create two unsorted arrays−

int[] arr1 = new int[] {50, 22, 15, 40, 65, 75};
int[] arr2 = new int[] {60, 45, 10, 20, 35, 56};

Let us now create a new resultant array, that would have the merged array−

Example

int count1 = arr1.length;
int count2 = arr2.length;
int [] resArr = new int[count1 + count2];
Now, we will merge both the arrays in the resultant array resArr:
while (i < arr1.length){
   resArr[k] = arr1[i];
   i++;
   k++;
}
while (j < arr2.length){
   resArr[k] = arr2[j];
   j++;
   k++;
}

Let us now see the complete example

Example

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;
public class Demo {
   public static void main(String[] args){
      int[] arr1 = new int[] {50, 22, 15, 40, 65, 75};
      int[] arr2 = new int[] {60, 45, 10, 20, 35, 56};
      System.out.println("1st Array = "+Arrays.toString(arr1));
      System.out.println("2nd Array = "+Arrays.toString(arr2));
      int count1 = arr1.length;
      int count2 = arr2.length;
      int [] resArr = new int[count1 + count2];
      int i=0, j=0, k=0;
      while (i < arr1.length) {
         resArr[k] = arr1[i];
         i++;
         k++;
      }
      while (j < arr2.length) {
         resArr[k] = arr2[j];
         j++;
         k++;
      }
      Arrays.sort(resArr);
      System.out.println("Sorted Merged Array = "+Arrays.toString(resArr));
   }
}

Output

1st Array = [50, 22, 15, 40, 65, 75]
2nd Array = [60, 45, 10, 20, 35, 56]
Sorted Merged Array = [10, 15, 20, 22, 35, 40, 45, 50, 56, 60, 65, 75]