Guess the Big O
Read the snippet. Pick its time complexity before the bar runs out. Chain correct answers to multiply your score.
10 secondsAnswer fast for a bigger speed bonus. The clock tightens as you go.
Combo multiplierEvery 3 in a row raises your multiplier, up to 5x.
3 livesA wrong answer or a timeout costs one. Survive as long as you can.
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Pick the complexity that matches the code.
Run over
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Correct
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Best combo
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Your best
High scores
Playing also counts toward your daily study time and streak.
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