You can actually find the answer to this question in the book Programming Interviews Exposed by John Morgan et. al. This is actually a VERY helpful book for this interview and all other programming interviews

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Xerox Overview (XRX)

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Website www.xerox.com

HQ Norwalk, CT

Industry

Printing & Imaging Equipment Manufacturing

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130K+ Employees, $17B+ Revenue

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Hewlett-Packard, Canon, Ricoh

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Interview Question for Software Engineer at Xerox:

Write a function that determines the number of 1 bits in the computer's internal representation of a given integer.

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