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In Python, you are allowed to use negative array indices to count starting from the right side of an array. For example, array[-1] is last element and array[-2] is the second last element in the array. How would you implement this in Java?
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The negative index is also invalid in Java. If you try to access an array with an invalid index, Java will throw an ArrayIndexOutOfBoundException . If you try to store a double value in an int array, it will cause a compilation error. If memory is not used correctly, memory is wasted in the array data structure.
To avoid the ArrayIndexOutOfBoundsException , the following should be kept in mind: The bounds of an array should be checked before accessing its elements. An array in Java starts at index 0 and ends at index length - 1 , so accessing elements that fall outside this range will throw an ArrayIndexOutOfBoundsException .
Languages that implement multi arrays as true multi arrays — arrays of arrays — cannot have negative indexes.
Java does not support negative indexes, to access the last cell, you should use
array[array.length-1] = lastElement;
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