Question

Python. Write a function that takes in a list and returns the first nonzero entry.

def nonzero(lst):

""" Returns the first nonzero element of a list

>>> nonzero([1, 2, 3])

1

>>> nonzero([0, 1, 2])

1

>>> nonzero([0, 0, 0, 0, 0, 0, 5, 0, 6])

5

""" "*** YOUR CODE HERE ***"

Answer 1

def nonzero(lst):
    """
    Returns the first nonzero element of a list
    >>> nonzero([1, 2, 3])
    1
    >>> nonzero([0, 1, 2])
    1
    >>> nonzero([0, 0, 0, 0, 0, 0, 5, 0, 6])
    5
    """
    for num in lst:
        if num != 0:
            return num


# Testing the function here. ignore/remove the code below if not required
print(nonzero([1, 2, 3]))
print(nonzero([0, 1, 2]))
print(nonzero([0, 0, 0, 0, 0, 0, 5, 0, 6]))

Process finished with exit code o