Using Big O notation, indicate the time requirement of each of the following tasks in the worst case. Describe any assumptions that you make. After arriving at a party, you shake hands with each person there. Each person in a room shakes hands with everyone else in the room. You climb a flight of stairs. You slide down the banister. After entering an elevator, you press a button to choose a floor. You ride the elevator from the ground floor up to the nth floor. You read a book twice. 3. Using Big O notation, indicate the time requirement of each of the following tasks in the worst case. Computing the sum of the first n even integers by using a for loop Displaying all n integers in an array Displaying all n integers in a sorted linked chain Displaying all n names in an array of linked chains Displaying one array element Displaying the last integer in a linked chain Searching an array of n items for a particular value by using a sequential search Sear