Which of the following could be a method heading for a membe

Which of the following could be a method heading for a member method that returns an array? int [] void DoSomething() int [] DoSomething() void int [] DoSomething() void DoSomething[] If an array is to be sent to a method, which of the following is a valid heading for a method? void DisplayOutput(double [] anArray) void DisplayOutput(double anArray) void DisplayOutput(double [10] anArray) void DisplayOutput(double anArray [10]) Which of the following is a valid example of calling a method and sending it an array argument? DisplayArrayContents(int [] anArray); DisplayArrayContents(anArray[10]); DisplayAirayContcnts(anArray); DisplayArrayContcnts(int [10] anArray); If you do not know the size of the array needed, you can create an array large enough to hold any number entries and tell users to enter a predetermined sentinel value after they enter the last value. Using this approach: requires that you increment a counter as values are entered so that you know how many elements are stored in your array is preferred to defining a static sized array. requires that you dimension the array to hold at least 100 entries. requires the array be defined to hold string elements.

Solution

Q1.
Collection can be divided into two parts:
linear and non-linear

List is linear collection
Set, Map are non-linear

Q2.
Ans: a. Object

Object class is the baase class of all other classes in Java

Q3.
Ans: b. 99
Array index starts from 0 to n-1, n is the size of an array

Q4. Ans: b. num[2] = 11
index of third element is (3-1) = 2

Q5.
Ans: b. 88

Loop starts from i = anArray.length-1 = 5, and anArray[5] = 88

Q6.
Ans: c. int[] DoSomething()

Q7.
Ans: a. void DisplayOutput(double[] anArray)

Q8. Ans: b. DisplayArrayContent(anArray)

Q9. Ans: a. requires hat an increment a counter value