two_sum.py

"""

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.

Example:

Given nums = [2, 7, 11, 15], target = 9,

Because nums[0] + nums[1] = 2 + 7 = 9,

return [0, 1].

"""
 
 
def twoSum(nums, target):

    """

    :type nums: List[int]

    :type target: int

    :rtype: List[int]

    """

    chk_map = {}

    for index, val in enumerate(nums):

      compl = target - val

      if compl in chk_map:

        indices = [chk_map[compl], index]

        print(indices)

        return [indices]

      else:

        chk_map[val] = index

    return False