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Data Structures for Coding Interviews in Python

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

Explore methods to find two numbers in a list that add up to a target value using hashing techniques. Learn to implement efficient solutions with dictionaries and sets in Python, understand their time and space complexities, and apply these strategies to solve similar algorithmic challenges.

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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

  • −105≤-10^5\leq ...