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Solution: Find Two Numbers That Add up to k—Hashing

Explore how to implement hashing solutions in Python to find two numbers that sum to a target value. Understand using dictionaries and sets to efficiently solve the problem with optimized time and space complexity.

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Statement

Given a list of integers nums and an integer target, k, find two numbers in the list that sum up to the target k.

There is exactly one solution for each input, and each element of the list can only be used once in the solution. The order of the returned elements does not matter.

Constraints:

  • 2≤2 \leq nums.length ≤103\leq10^3 ...