Suppose you have an array of n elements containing only two distinct keys, true and false. give an o(n) algorithm to rearrange the list so that all false elements precede the true elements. you may use only constant extra space.

to change your username, you must:

1) make sure what the username you want to change to is allowed in this community

2) contact a administrator (for example, jaysl)

3) through pm, tell the admin what you want to change to

4) if the username is allowed, it will be changed in a matter of seconds (minutes at most)

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i've had the same problem. i generally just ignore it, as a ton of these "verified answers" are completely wrong.

cyberstalking on the internet means to harass or stalk someone, a group, or an organization. this may include defamation, slander, and false accusations. in many jurisdictions, cyberstalking is a criminal offense. 

on the other hand, cyberbullying focuses more on intimidating, threatening or harassing someone. harmful bullying include posting threats, rumors, and sexual remarks.