- A. O(n) B. O(n^2) C.O(logn) D. 0(1) > Insert a new data item into a Stack implemented by array. Delete the last inserted item from a Stack implemented by array Insert a data item into an Ordered Array Delete an arbitrary data item from an Ordered Array Delete the least recently inserted data item from a Queue implemented by array Delete any one data item from an unordered array Search for a value in ordered array using binary search