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Solved TwoSum question #8

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Solved TwoSum question #8

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13 changes: 13 additions & 0 deletions two_sum.py
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Original file line number Diff line number Diff line change
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# https://leetcode.com/problems/two-sum/
# O(n) time complexity
# O(n) space complexity

class Solution:
def twoSum(self, nums:list[int], target:int) -> list[int]:

prevMap = {}
for i, n in enumerate(nums):
diff = target - n
if diff in prevMap:
return [prevMap[diff], i]
prevMap[n] = i