Given a vector x, return vector y with all negative elements from the vector x if x has negative elements. Otherwise return 0.
for example: x=[1 2 3 4 -5 -2] y=[-5 -2]
x=[1 2 3] y=0
Duplicate each element of a vector.
Is it a number?
Flip the bit
Can we make a triangle?
Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.
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