Functions with return value

Printing in the output is great, but most of the useful functions that we have used before like max() or math.sqrt() do not print a value. They return a result. max() returns the maximum among all the values passed to it. math.sqrt() returns the square root of a number which we can use afterward in our program.

To return a value from a function, we can use the return command:

def celsius2fahrenheit(degrees):
    return 9 / 5 * degrees + 32

print(celsius2fahrenheit(10))                            # 50.0
print(celsius2fahrenheit(10) + celsius2fahrenheit(20))   # 118.0

We can have functions with more operations in their body before returning:

def product(numbers):
    res = 1
    for n in numbers:
        res *= n
    return res

print(product([4, 5, 6]))   # 120
print(product([-1, 0, 5]))  # 0

Challenge

You are asked to write a function called vote, which would return the element which appears the most frequent among the 3 numbers passed to it. If all of them are different, the function should return the first one.

The input contains 3 numbers.

The program should print a single number - the most frequent one returned by the function vote.

Input	Output
0 1 0	0
1 2 3	1

Challenge

Constraints

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