Question

Python homework.

Write your own versions of the Python built-in functions min and max. They should take a list as an argument and return the minimum or maximum element. Hint: Pick the first element as the minimum (maximum) and then loop through the elements to find a smaller (larger) element. Each time you find a smaller (larger) element, update your minimum (maximum). Ensure you are supplied valid input i.e list of only numbers

Answer 1

def minimum(lst):
    m = lst[0]
    i = 0
    for x in lst:
        if x < m:
            m = x
        i += 1
    return m

def maximum(lst):
    m = lst[0]
    i = 0
    for x in lst:
        if x > m:
            m = x
        i += 1
    return m

# Testing
print(maximum([4,2,5,1,3]))
print(minimum([4,2,5,1,3]))