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Two Sum in Python

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Problem

Lyft analyzes pairs of ride fare adjustments that combine to a target value. Given an array of integers nums and an integer target, return the indices of two distinct elements whose values add up to target.

You may assume that every valid input contains exactly one solution. Return the indices in any order, and do not use the same array element twice.

Formal Specification

  • Input: nums, a list of integers, and target, an integer.
  • Output: A list containing two distinct zero-based indices [i, j] such that nums[i] + nums[j] == target.
  • Function: Implement two_sum(nums, target).

Constraints

  • 2 <= len(nums) <= 10^4
  • -10^9 <= nums[i] <= 10^9
  • -10^9 <= target <= 10^9
  • Exactly one valid pair exists
  • The same element cannot be used twice

Function Signature

def two_sum(nums, target):
Your solutionPython 3
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