Write a function two_sum(nums, target) using a hash map

A medium Python interview practice problem on DataDriven. Write and execute real python code with instant grading.

Domain

Python

Difficulty

medium

Problem

Write a function two_sum(nums, target) using a hash map. For each number, check if its complement (target - num) has been seen. Given nums = [2, 7, 11, 15] and target = 9, print the indices.

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