Amazonmiddez. de 2024
Find the unpaired number in an array of 2n+1 numbers where all other numbers are paired and adjacent
Given an array where every element appears exactly twice except for one, return the element that appears only once. Achieve O(n) time and O(1) space — this is typically solved by XORing all numbers so matching pairs cancel out.
Use esses exemplos para entender em que contexto ela costuma cair e adaptar sua prática.
Find the unpaired number in an array of 2n+1 numbers where all other numbers are paired and adjacent
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