numbers=[1,4,2,3]
max = numbers[0]
l = len(numbers)
for i in range(1,l):
    if numbers[i] > max:
        max = numbers[i]
print("Maximum number is: ", max)

min = numbers[0]
for i in range(1,l):
    if numbers[i] < min:
        min = numbers[i]
print("Minimum number is: ", min)