Hi: I found this solution to a problem using python. The problem is given an array of numbers, find the indices of 2 numbers that add to a target value (20 in the example below). Why is there a "-> List[int]? Thanks!
from typing import List
class Solution:
def twoSum(self, nums: List[int], target: int) -> List[int]:
hashmap = {}
for i in range(len(nums)):
complement = target - nums[i]
print(i,target,nums[i],complement)
if complement in hashmap:
return [i, hashmap[complement]]
hashmap[nums[i]] = i
input_list = [2,8,19,15,1]
ob1 = Solution()
print(ob1.twoSum(input_list, 20))
