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Given an array of integers named nums, when will the following statement result in w being a positive non-zero number?
int w = Math.abs(nums + nums[nums.length-1])/10;
When nums is an empty array.
When nums has only one element with a value of 5.
When the first element in nums is a 6 and the last element is a -5.
When nums is an array of a 100 elements, each with a value from -4 to 4, both inclusive.
When nums is an array of non-repeating integers from 0 to 9, in descending sequence.