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Finding a duplicated item in an array of N integers in the range 1 to N − 1
33
·
Raymond Chen
·
April 13, 2026, 8:04 p.m.
Old New Thing
Code
algorithm
data-structures
array manipulation
Duplicate Detection
Summary
This blog post discusses a technique for finding a duplicated item in an array of integers ranging from 1 to N-1, leveraging the array's special characteristics.
Read full post on devblogs.microsoft.com →
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