text: def twoSum(nums, target):
      """
      Given an array of integers, return indices of the two numbers such that they add up to a specific target.
      You may assume that each input would have exactly one solution, and you may not use the same element twice.
      """
      h = {}
      for i, v in enumerate(nums):
          if v in h:
              return [h[v], i]
          else:
              rem = target - v
              h[rem] = i
  
  
  nums = [2, 7, 11, 15]
  target = 9
  print(twoSum(nums, target))
  