Fix code error

[Gemaxis]

When using 'System.out.println(mapResult)';

The output appears as follows:

[[Ljava.lang.String;@506e6d5e, [Ljava.lang.String;@96532d6, [Ljava.lang.String;@3796751b]

To print the arrays properly, they should be formatted as follows:

mapResult.forEach(arrays-> System.out.println(Arrays.toString(arrays)));

Outputs:

[APPLE, BANANA, CHERRY]
[ORANGE, GRAPE, PEAR]
[KIWI, MELON, PINEAPPLE]