Input x is the sampled signal vector, may have both AC and DC components. output vector y should have AC components removed then change sign alternately, for example, input [1:5], output [3 -3 3 -3 3].
Remove the vowels
Encode Roman Numerals
surface of a spherical planet
Sorted highest to lowest?
Is it an Armstrong number?
speed vs size
radius of a spherical planet
Predicting life and death of a memory-less light bulb
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