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Arrays, Two-Pointers & Sliding Window Quiz Questions
A sample of the 10 questions below — instant scoring and an explanation for every answer. No sign-in required to play.
Question 1
What is the time complexity of accessing an element by index in an array?
AO(1)
BO(n)
CO(log n)
DO(n^2)
Question 2
In the two-pointer technique, pointers typically move...
AIn the same direction only
BToward or away from each other based on the problem
CRandomly
DOnly from left to right
Question 3
What is the main advantage of the sliding window technique?
AIt sorts the array first
BIt always reduces space to O(1)
CIt avoids recomputation by reusing overlapping window results
DIt only works on sorted arrays
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