CODEWITHSUNDEEP
python-3.xfunctional-programming
Alex Bachurin
Alex Bachurin

Reputation: 47

Little puzzle on functional programming in Python

The input is two integers in one line, x and y. I need to write a basically one-line program which does different things with x and y, and prints the result. Say, the output should be x + 1, y * y. Or list(range(x)), y // 2. Whatever operations but different. No def functions, also 'if' and 'for' are prohibited. As far as i understand, should look something like:

print(
    *map(
        lambda x: ??? ,
        map(
            int, input().split()
        )
    )
)

(But lambda can only do same thing to both inputs, right? ) I know it is possible and i've been thinking about this for three days to no avail. Most probable i miss something very obvious.

Upvotes: 1

Views: 85

Answers (2)

melpomene
melpomene

Reputation: 85767

This seems to work just fine:

print(
    *(lambda x: [int(x[0]) + 1, int(x[1]) * int(x[1])])(
        input().split()
    )
)

No fancy functional tricks or map are needed.

Upvotes: 0

Patrick Haugh
Patrick Haugh

Reputation: 60974

Your lambda function can take an x and y and turn them into pretty much any expression. Then you would call that function, doing the processing of the inputs outside of that lambda

print(*(lambda x, y: (x+1, y*y))(*map(int, input().split())))
print(*(lambda x, y: (list(range(x)), y//2))(*map(int, input().split())))

Upvotes: 1

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