Leetcode 1: two sum

leetcode_1_two_sum.rb

Leetcode 1: two sum

# @param {Integer[]} nums
# @param {Integer} target
# @return {Integer[]}
def two_sum(nums, target)
    temp_hash = {}
    nums.each_with_index do |i, ind|
        return [temp_hash[i], ind] if temp_hash[i]
        temp_hash[target - i] = ind
    end
    return nil
end