Codility coding challenge

FrogJmp

# https://codility.com/demo/results/demoKSSE8R-5B3/
# A small frog wants to get to the other side of the road
# two solutions, this one gets 33% of scores:

def solution(x, y, d)
    y % d > 0 ? ((y - x) / d) + 1 : (y - x) / d
end

# this gets 100% scores:
def solution(x, y, d)
    dis = y-x
    (dis/d.to_f).ceil
end

# d should not be zero otherwise you will get FloatDomainError: Infinity