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Java Array Exercises: Test the equality of two arrays

Java Array: Exercise-23 with Solution

Write a Java program to test the equality of two arrays.

Pictorial Presentation:

Java Array Exercises: Test the equality of two arrays

Sample Solution:

Java Code :

public class Exercise23 {
static void  equality_checking_two_arrays(int[] my_array1, int[] my_array2)
  {
  boolean  equalOrNot = true;
  
  if(my_array1.length == my_array2.length)
  {
  for (int i  = 0; i < my_array1.length; i++)
  {
  if(my_array1[i] != my_array2[i])
  {
  equalOrNot = false;
  }
  }
  }
  else
  {
  equalOrNot  = false;
  }
  
  if  (equalOrNot)
  {
  System.out.println("Two arrays are equal.");
  }
  else
  {
  System.out.println("Two  arrays are not equal.");
  }
  }
  
  public static void  main(String[] args)
  {
  int[] array1 =  {2, 5, 7, 9, 11};
  int[] array2 =  {2, 5, 7, 8, 11};
  int[] array3 =  {2, 5, 7, 9, 11};
  
  equality_checking_two_arrays(array1,  array2);
  equality_checking_two_arrays(array1, array3);
  }
  }

Sample Output: 

Two arrays are not equal.                                                                                     
Two arrays are equal.

Flowchart:

Flowchart: Java exercises: Test the equality of two arrays

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Java Code Editor:

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Previous: Write a Java program to find all pairs of elements in an array whose sum is equal to a specified number.
Next: Write a Java program to find a missing number in an array.

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Java: Tips of the Day

getEnumMap

Converts to enum to Map where key is the name and value is Enum itself. 

public static <E extends Enum<E>> Map<String, E> getEnumMap(final Class<E> enumClass) {
    return Arrays.stream(enumClass.getEnumConstants())
            .collect(Collectors.toMap(Enum::name, Function.identity()));
}

Ref: https://bit.ly/3xXcFZt