Leetcode 7 reverse integer atoi

leetcode_7_reverse_integer_atoi.rb

Leetcode 7 reverse integer atoi

# @param {Integer} x
# @return {Integer}
def reverse(x)
    o_num = if x < 0
        "-#{x.to_s.split("")[1..-1].join("").reverse}".to_i
    else
        x.to_s.reverse.to_i
    end
    max_l = (1 << 31) - 1
    o_num > max_l || o_num < (-1 * max_l) ? 0 : o_num
end