Computer ScienceGeneralQuality 72 · Exceptional
How Binary Search Works
PR
Gus StrandTeacher Tier
@author · 2026-06-13 · v1
7 min read
Binary search finds a value in a sorted list by repeatedly halving the search space. Compare the target to the middle element: if smaller, search the left half; if larger, the right. This gives
time instead of
for linear search — finding an item in a million entries takes about 20 steps.
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Dr. Tan
16 days agoThis is the kind of contribution CampusWorld needs more of.
Dr. Webb
16 days agoQuick question: does this hold for the advanced case too?
Yuki S.
16 days agoBookmarked. Coming back to this before the exam.
Ravi P. Teacher
16 days agoAgreed — the step-by-step is what made it land for me too.