class Solution(object):
    def twoSum(self, nums, target):
        """
        :type nums: List[int]
        :type target: int
        :rtype: List[int]
        """
        hash_map = dict()
        i = 0
        j = len(nums)-1

        for i in range(len(nums)):
            if (target-nums[i]) in hash_map :
                return [hash_map[target-nums[i]], i]
            hash_map[nums[i]] = i