The sign of a number

Problem

Write a function that takes a number and returns its sign: 1 if it's positive and -1 if it's negative. With 42 you return 1, with -3 you return -1.

Zero is neither positive nor negative, so it gets its own answer: with 0 you return 0. The number can have decimals: 0.5 is positive too.

Examples

• 42 → 1

• -3 → -1

• 0 → 0

Besides these, the challenge has hidden tests that are revealed when you submit your solution.

You start with this

def sign(n):
    pass

function sign(n) {
}