Given an integer n and an array a of length n, your task is to apply the following mutation to a: array a mutates into a new array b of length n. for each i from 0 to n - 1, b[i] = a[i - 1] + a[i] + a[i + 1].if some element in the sum a[i - 1] + a[i] + a[i + 1] does not exist, it should be set to 0. for example, b[0] should be equal to 0 + a[0] + a[1].

The ieee 802.11: defines standards for wireless local area network (wlan) communication protocols. identifies various computers or devices connected to a network. verifies any resource attached to another computer on a network that is different from the computer to which the user is logged on. connects multiple local area networks (lans) and wide area networks (wans).