dsaprobsandsols

Two Sum

Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. You may assume that each input would have exactly one solution, and you may not use the same element twice. You can return the answer in any order.

Runtime 0ms Memory 13.17MB
def twoSum(nums, target):
    """
    :type nums: List[int]
    :type target: int
    :rtype: List[int]
    """
    nmap = {}
    for i in range(len(nums)):
        rem = target - nums[i]
        if rem not in nmap:
            nmap[nums[i]] = i
        else:
            return [nmap[rem], i]
    return None