Unsigned numbers do not have preceeding positive or negative signs. Hence, the program written in python 3 copies unsigned values in the given array to another array thus :
array1 = {-4,-1,-2,-1,0,1,2,3,4 }
#assigns a set of values to array 1
array2 = set()
#initialize an empty array
for ele in array1 :
#loop through the values in array1
if ele >= 0 :
#since the signed values are negative, checks for values greater than or equal to 0
array2.add(ele)
#add to array 2
print(array2)
A sample run of the program is attached.
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