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
Summing Digits within Text
Project Euler: Problem 1, Multiples of 3 and 5
Relative ratio of "1" in binary number
Maximum value in a matrix
Finding an element in a vector
check if a number is odd
check if a number is odd or even. Return 1 if it's odd, otherwise 0
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