Coding rounds

Google coding rounds

5 timed coding challenges drawn from real loops. Submit a solution to see your test pass rate and AI feedback.

beginner 30:00+50 XP

Two Sum

Given an array of integers `nums` and an integer `target`, return the indices of the two numbers that add up to `target`. Each input has exactly one solution, and you may not use the same element twice. Aim for O(n) time using a hash map.

Examples

2 + 7 = 9
in: nums=[2,7,11,15], target=9
out: [0,1]
2 + 4 = 6
in: nums=[3,2,4], target=6
out: [1,2]

javascript

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