Answer: A central wireless access point (AP)
Explanation:
A central wireless access point (WAP) is a hardware device which can be configured on a local area network connecting WLAN to the wired network.
These APs have built in routers which enables wireless devices to connect with it. Mostly they are hardwired to devices such as in network switches or modems.
These access points are found in many institutions, organisations, enterprises which enables devices to be connected to them and provides access to the internet and resources.
There are also public access points which enables people travelling by public transport to connect through them and in many business organisation there are closed APs for use only by the employees of them which enables file sharing and information processing.
You'll need a helper variable for this, so depending on your programming language, the solution becomes:
int helper;
helper = arr[i];
arr[i] = arr[j];
arr[j] = helper;
End-User Software. Because it is not professional
