public class F2{ public static int foo(ArrayList<Integer> a) { int sum = 0; for(int i =...
public class F2{
public static int foo(ArrayList<Integer> a) {
int sum = 0;
for(int i = 0; i <a.size(); i++){
if(i % 3 == 1)
sum += a.get(i);
else if(i % 3 == 2)
sum -= a.get(i);
else
sum++;
}
return sum;
}
}
What do the following method calls return?
1. foo(new ArrayList<>(Arrays.asList(1,2,3,4)))
2. foo(new ArrayList<>())
3. foo(new ArrayList<>(Arrays.asList(1,2,-3,4325,-2)))
4. foo(new ArrayList<>(Arrays.asList(0,0,0)))
Homework Answers
ANSWER: I have run your code anf following are the output:
ANSWER 1:
ANSWER 2:
ANSWER 3:
ANSWER 4:
Add Answer to:
public class F2{
public static int foo(ArrayList<Integer> a) {
int sum = 0;
for(int i =...
JAVA programming 9.9 Ch 9, Part 2: ArrayList Searching import java.util.ArrayList; public class ArrayListSet { ...
JAVA programming 9.9 Ch 9, Part 2: ArrayList Searching import java.util.ArrayList; public class ArrayListSet { /** * Searches through the ArrayList arr, from the first index to the last, returning an ArrayList * containing all the indexes of Strings in arr that match String s. For this method, two Strings, * p and q, match when p.equals(q) returns true or if both of the compared references are null. * * @param s The string...
Given the recursive method: public int someValue(List<Integer> A) { if (A.size() > 0) { int v...
Given the recursive method: public int someValue(List<Integer> A) { if (A.size() > 0) { int v = A.get(0); A.remove(0); return v + someValue(A); } else return 0; } What value does the method return if A contains 1 2 3 4 5? a. 0 b. 5 c. 10 d. 15
Consider the following method. public static ArrayList<Integer mystery(int n) ArrayList<Integer seg - new ArrayList<IntegerO; for (int...
Consider the following method. public static ArrayList<Integer mystery(int n) ArrayList<Integer seg - new ArrayList<IntegerO; for (int k = n; k > 0; k--) seq.add(new Integer(k+3)); return seq What is the final output of the following Java statement? System.out.println(mystery(3)); a. [1,2,4,5) b. [2,3,4,5) c. [6,5,4,3] d. [7, 7, 8, 8] e. [7,8,9, 8) O Consider the following method: public static int mystery(int[] arr, int k) ifk-0) return 0; }else{ return arr[k - 1] + mystery(arr, k-1):) The code segment below is...
(How do I remove the STATIC ArrayList from the public class Accounts, and move it to...
(How do I remove the STATIC ArrayList from the public class Accounts, and move it to the MAIN?) import java.util.ArrayList; import java.util.Scanner; public class Accounts { static ArrayList<String> accounts = new ArrayList<>(); static Scanner scanner = new Scanner(System.in); public static void main(String[] args) { Scanner scanner = new Scanner(System.in); int option = 0; do { System.out.println("0->quit\n1->add\n2->overwirte\n3->remove\n4->display"); System.out.println("Enter your option"); option = scanner.nextInt(); if (option == 0) { break; } else if (option == 1) { add(); } else...
Consider the following Java method: public static ArrayList<Integer nums ArrayList<Integer values new ArrayList<Integer0; for(int i=10; i<30;...
Consider the following Java method: public static ArrayList<Integer nums ArrayList<Integer values new ArrayList<Integer0; for(int i=10; i<30; i-i+3) if(i%) values.add(i); return values: What is returned after the method call nums()? a. [12] b. [13] c. [14] d. [15] e. [16] O Which of the following represents the final output of the code segment below? int k: int[]A; A new int[3]: fork-0; k<A.length;k++) A[k]-A.length-k; forſk-0; k<A.length-1; k++) A[k+1]-A[k) for(int i-0;i<A.length;i++) System.out.print(A[i]+" "); a. 222 O b. 333 c. 444 d. 555 O...
1) In the Quiz class, the foo method has the following API: public void foo( int...
1) In the Quiz class, the foo method has the following API: public void foo( int x, String s) Which method call(s) would be correct assuming both a and y are integer values and assuming each statement is complete? a. Quiz q = new Quiz(); a = q.foo( y, “Maybe?” ); b. Quiz q = new Quiz(); q.foo( 1, “Hmmm!” ); c. Quiz q = new Quiz(); Quiz.foo( y, “You think” ); d. Both b and c 2) In the...
Consider the following Java classes: class A{ public int foo () { return 1; } public...
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Given the following Java code: class C { public int foo(C p) { return 1; }...
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Code in java Using the template below: public class Lab03 { public static void main(String[] args)...
Code in java
Using the template below:
public class Lab03 {
public static void main(String[] args) {
ArrayList<Integer> list1 = new
ArrayList<Integer>();
Collections.addAll(list1, 1, 3, 5, 5 );
ArrayList<Integer> list2 = new
ArrayList<Integer>();
Collections.addAll(list2, 3, 7, 3, 2, 4 );
ArrayList<Integer> result1= uniqueUnion(list1,list2);
System.out.println(result1);
Integer[] array = new Integer[]{ 29, 28, 27, 16, 15, -14, 3, -2,
2};
ArrayList<Integer> arrayList = new
ArrayList<Integer>(Arrays.asList(array));
System.out.printf("The average is: %.2f%n",
averagePositive(arrayList));
} // end main
public static ArrayList<Integer>
uniqueUnion(ArrayList<Integer> list1,
ArrayList<Integer> list2) {...
1. What is output by the following code: ArrayList< Integer > a = new ArrayList< Integer...
1. What is output by the following code: ArrayList< Integer > a = new ArrayList< Integer >(); ArrayList b = a; a.add(new Integer(4)); b.add(new Integer(5)); a.add(new Integer(6)); a.add(new Integer(7)); System.out.println(b.size()); A)1 B)2 C)3 D)4 E)5 2. Assume the Student and Employee classes each extend the Person class. The Student class overrides the getMoney method in the Person class. Consider the following code: Person p1, p2, p3; int m1, m2, m3; p1 = new Person(); m1 = p1.getMoney(); // assignment 1...
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Consider the following Java method: public static ArrayList<Integer nums ArrayList<Integer values new ArrayList<Integer0; for(int i=10; i<30; i-i+3) if(i%) values.add(i); return values: What is returned after the method call nums()? a. [12] b. [13] c. [14] d. [15] e. [16] O Which of the following represents the final output of the code segment below? int k: int[]A; A new int[3]: fork-0; k<A.length;k++) A[k]-A.length-k; forſk-0; k<A.length-1; k++) A[k+1]-A[k) for(int i-0;i<A.length;i++) System.out.print(A[i]+" "); a. 222 O b. 333 c. 444 d. 555 O...
Code in java
Using the template below:
public class Lab03 {
public static void main(String[] args) {
ArrayList<Integer> list1 = new
ArrayList<Integer>();
Collections.addAll(list1, 1, 3, 5, 5 );
ArrayList<Integer> list2 = new
ArrayList<Integer>();
Collections.addAll(list2, 3, 7, 3, 2, 4 );
ArrayList<Integer> result1= uniqueUnion(list1,list2);
System.out.println(result1);
Integer[] array = new Integer[]{ 29, 28, 27, 16, 15, -14, 3, -2,
2};
ArrayList<Integer> arrayList = new
ArrayList<Integer>(Arrays.asList(array));
System.out.printf("The average is: %.2f%n",
averagePositive(arrayList));
} // end main
public static ArrayList<Integer>
uniqueUnion(ArrayList<Integer> list1,
ArrayList<Integer> list2) {...
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