3 ArrayLists that creates an ArayList -Integers object named list and fills list

Question

3 ArrayLists that creates an ArayList -Integers object named list and fills list with these numbers (using one or a pair of for or while loops): 3.2 Consider the ArrayList-Integer> object named list containing these Integers: list 1, 2, 3, 4, 5, 4, 3, 2, 1, o What are the contents of list after this loop completes? for (int i-1; i object named list are negative. 3.4 Write a method named arrayListSum) that has one parameter pList which is an object of the class ArrayList 3.5 Write a method named named arrayLisiCreate) that has two int parameters plen and plnitValue. The method shall Print the count after the loop terminates. Integer>. The method shall return the sum of the elements of pList. create and retun a new ArrayList-Integer? object which has exactly plen elements. Each element shall be initialized to plnit Value. 3.6 Write a void method named insertName0 that has two input parameters: (1) pList which is an object of ArrayList

Explanation / Answer

Question 3.1

ArrayList<Integer> list = new ArrayList<Integer>(10);

// Add elements to ArrayList

for(int i=0;i<=4;i++)

{ list.add(i);

}

for(int i=0;i<=4;i++)

{ list.add(i);

}

Question 3.2

The contents of the list after the execution of the for loop is :

{1,3,6,10,15,19,22,24,25,25}   

Question 3.3

int ct=0;
for(int i=0;i<10;i++)
if(list.get(i)<0)
ct++;

System.out.println("Number of negative values "+ ct);

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