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Coding round

Frontend engineer

Question 2 of 4

Arrays & algorithms

Find the two numbers that add up to a target.

Return the indices of the two values in one pass.

solution.pyPython 3
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def two_sum(nums, target):
    seen = {}
    for i, num in enumerate(nums):
        if target - num in seen:
            return [seen[target-num], i]

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Coding · Arrays

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