int count = 0;
for (int x = 0; x < 3; x++)
for (int y = x; y < 3; y++)
for (int z = y; z < 3; z++)
count++;
What is the value of count after the code segment is executed?
The answer is 9, but I don't really understand how this answer was derived.
int count = 0;
for (int x = 0; x < 3; x++)
for (int y = x; y < 3; y++)
for (int z = y; z < 3; z++)count++;
What is the value of count after the code segment is executed?
The answer is 9, but I don't really understand how this answer was derived.
The title says already where my difficulties are. I forgot to say, the "S" printing part works, but why the others doesn't. To make it more clear:
java Monoton 1 3 3 4 & java Monoton 1 3 4 1
=> nothing (my output)
I forgot to notice, with 1 3 3 4 as parameters it jumps out at if (b < c), which is expected. but it jumps out of the whole if instead just run the else part. that's the essence of my problem.
The Exercise:
=> The program should print the following letters;
S, if every number is true bigger than the before,
M, if every number is bigger or equal than the before,
N in the other cases
Examples (from the exercise)
=> java Monoton 0 1 2 4
S
=> java Monoton 1 3 3 4
M
=> java Monoton 1 3 4 1
N
The Exercise should done without the use of logical operators or other combined requirements.
Java Code:
public class Main {
public static void main(String[] args) {
int a = Integer.parseInt(args[0]);
int b = Integer.parseInt(args[1]);
int c = Integer.parseInt(args[2]);
int d = Integer.parseInt(args[3]);
[Code] .....
So I cant figure out why my output for my for loop isn't working properly. So the output for the square comes out right but the for loop isn't working properly for the H. I have tried to figure it out and it should go to the next line but its not.
import java.util.Scanner;
public class Random
{
public static void main(String [ ] args)
{
[Code] ....
Output
Enter a positive odd integer: 5
Square:
*****
* *
* *
* *
*****
H:
* *
Here's the code: it's while loop inside a for loop to determine the proper length of a variable:
for (int i = 0; i < num; i++) {
horse[i]=new thoroughbred();
boolean propernamelength = false;
while (propernamelength==false){
String name = entry.getUserInput("Enter the name of horse "
[code]....
I was just wondering what was going on here -- I've initialized the variable, so why do I get this message? (actually the carat was under the variable name inside the parentheses.
just trying to learn it on my spare time and I'm doing do-while loops
public class help {
public static void main (String args[])
throws java.io.IOException {
char choice, ignore;
do{
System.out.println ("Choose one:");
System.out.println("1. if");
System.out.println("2.switch");
[code]....
It makes no difference in the program wither i delete this block or keep it..how while (choice < '1'| choice >'2'); translates? I would assume it would be while (choice >= '1'| choice =<'2');?
Question: you are only allowed to use numbers from 1-6. Write a program to find all the permutations when three numbers are multiplied together to give a result 8. one number cannot occur twice in any permutation.
public class number4
{ public static void main(String[] args)
{
for(int a=1; a<=4; a++)
{
for(int b=1; b<=4; b++)
{
[Code]...
my program also prints out 2 2 2. but i'm not allowed to do that. how can I stop it from printing 2 2 2 ?
Here's what "Why doesn't this work?" question. It concerns a small method which is part of a card game.
I'm trying to check a condition from a section of an array, without a predetermined number of times any given call to this method will require a check. How much of the array I'm checking could vary greatly.
Is it at all possible to nest a for loop yielding a variable number of boolean && conditions inside an if? Am I just missing the right bracketing or is this nesting (if that's the word) even possible in the language?
To clarify, below is broken code. Compiler isn't letting me accomplish this goal as I envision it.
public boolean isFlanking() {
boolean f;
int reach = Math.abs(selectorX - targetX);
if(rival.getDeck()[selectorX].getPile().isEmpty() == true &&
[Code] ....
//Main method
public static void main(String args[])throws IOException{
boolean runProgram = true;
Scanner keyboard = new Scanner(System.in);
//runs program while runProgram is true
while (runProgram){
[code].....
for (int i = 0; i < 4; i++)
{
for (int k = 0; k < i; k++)
{
System.out.print(" ");
}
for (int j = 4; j > i; j--)
{
System.out.print("$");
}
System.out.println();
}
I was told that the answer when this code segment is printed look's like this:
$$$$
$$$
$$
$
Here's what I did:Looking at the outer for loop, (i) 0 < 4 so I went into the first inner nested loop. (k) 0 is not less than (i) 0 so I went to the 2nd inner nested loop and found that it worked, and I was able to repeat this loop 3 more times and then I exited the loop and printed the line out (giving me the first line of four $). I then went back to the outer for loop, increased i by 1 and (i) 1 < 4 so I went to the 1st inner nested loop. I used the 0 for the k first and (k) 0 < 1 so I printed out a space (now here's where I get lost) I then incremented k by 1, so k = 1, but 1 is not less than 1 (i) and so I moved on to the next nested for loop. So when this line is printed, I'll only have one space when there should be 4.
I'm having trouble figuring out the Big-O notation for this loop. For now I only have it in pseudocode. I hope you understand it anyway
for i = 1 to n do
j = 1
while j <= n/2 do
print "*"
j = j + 1
end while
end for
I don't know how to write a program based on for loop like pattern printing.etc
View Replies View Relatedhow does this nested enhanced for loop execute? I dont know how to indent the code.
for (String exam : exams)
for (String level : levels)
for (String grade : grades)
System.out.println(exam+":"+level+":"+grade);
Note:
exams,levels,grades are arraylist
exams contain Java,Oracle
levels contain Basic,Advanced
grades contain pass,fail
I built a java code to print the following pattern using nested loop:
1 2 3 4 5 6 7 8 7 6 5 4 3 2 1
1 2 3 4 5 6 7 6 5 4 3 2 1
1 2 3 4 5 6 5 4 3 2 1
1 2 3 4 5 4 3 2 1
1 2 3 4 3 2 1
1 2 3 2 1
1 2 1
1
And here is my code
public static void main(String[] args) {
for(int i=1; i<=8;i++)
{
for(int k=1;k<=i;k++)
{
System.out.print(" ");
[Code] .....
which gives the partially true output:
123456781
123456721
123456321
123454321
123454321
123654321
127654321
187654321
I couldn't figure out how to place the spaces.I have made some changes on the code, but it didn't work.
I'm trying to learn Java and my current project is to write a short program to determine the factorial of a number entered by the user. I haven't looked. There may be a method that will do it, but I want to use a for loop specifically.
What I have compiles just fine. I'm actually pretty thrilled just with that. Here is what I have:
class factorial {
public static void main( String[] args) {
Scanner scan = new Scanner(System.in );
int num;
int product = 1;
[Code] ....
Implementation of the nested for loop. I thought it was going to go smoothly but apparently not.Purpose: This program is meant to print out all the prime numbers up to a certain range using the algorithm Sieve of Eratosthenes.
Update output: Works as expected.
Java Code:
import java.util.Scanner;
import java.util.ArrayList;
public class PrimeFactors
{
static ArrayList<Double> primeList = new ArrayList<>();
static double range = 0;
static double maxPrime = 0;
static double primeTester = 0;
[code]....
I just started playing around with Java for awhile, but got caught up in a problem when using ArrayList.
CinemaAppMain
public class CinemaAppMain {
public static void main(String[] args) {
new CinemaApp().start();
[Code]....
I am trying to get the movie name and theatre title from their ArrayList, and I know I need to go through the movie list & theatre list to find their name & title, and compare it with the user input and print out the result.
I use for(int i=0;i<movies.size();i++) to go through the the movie list, and I tried using for(int i=0;i<theatres.size();i++) to go through the theatre list. But when I printing multiple time with different user input value, it will show me strange result (screening have same movie name & theatre name, the else if statement is printed below the user input, user input is printed more than once after the first time).
Edit: I know its wrong for me to use nested for loop,if not, another solution is needed to get the item inside both of the list. (getting the "title" from movie list & "name" from theatre list)
Write a nested loop for a pyramid pattern. Well here's an ugly description of what it should look like:
1
1 2 1
1 2 4 2 1
1 2 4 8 4 2 1
1 2 4 8 16 8 4 2 1
1 2 4 8 16 32 16 8 4 2 1
1 2 4 8 16 32 64 32 16 8 4 2 1
1 2 4 8 16 32 128 64 32 16 8 4 2 1
I managed to make the pyramid using addition. However, how to turn it into multiplication x 2.
import java.util.*;
public class NumbersPyramid
{
public static void main(String[] args) {
int odd = 1;
int numSpaces = 7;
[code]....
I am working on my java program it prints out a table of angles and the sin, cos, and tan. For extra credit he wanted us to use nest loops to create a space after every five lines. I have come real close to getting this to work but have a problem with the very end of the table. The table needs to stop at 180...
public static void printTable(double angle,double sin,double cos,double tan) { // Method to create a table for the values
for (double j = 0; j <= 180;) {
for (double i = 1; i <= 5; i++) {//loop to print five lines of code
angle = Math.toRadians(j);
[Code] .....
Here is the end of the output of the table:
175.00.0872-0.9962-0.0875
176.00.0698-0.9976-0.0699
177.00.0523-0.9986-0.0524
178.00.0349-0.9994-0.0349
179.00.0175-0.9998-0.0175
180.00.0-1.00.0
181.0-0.0175-0.99980.0175
182.0-0.0349-0.99940.0349
183.0-0.0523-0.99860.0524
184.0-0.0698-0.99760.0699
I'm trying to make a custom checkboard with given user input, in the form of (# of rows, # of columns, size of each square, filler character).
So the input 2 3 5 * would look like
*****.........*****
*****.........*****
*****.........*****
*****.........*****
*****.........*****
.........*****
.........*****
.........*****
.........*****
.........*****
I've made my loop, but I am unable to get more then a 1 1 1 checkerboard properly. I am stuck on how to divide the filler characters to make the proper square size. As of now they are all one lined.
import java.util.*;
public class Checker{
public static void main(String[] args) {
int col, row, size; char filler;
System.out.println("Please enter 3 numbers and a character."); //output
[Code] ..........
I am having problem with some problems like this nested for-loop for instance ....
-----1-----
----333----
---55555---
--7777777--
-999999999-
Now I have to write a method called printDesign that produces the following output but i am not even entirely sure how to start it out now of course i know how to make a for-loop but and i guess if i was to do something for this i would do this .....
Java Code:
for(int*j=0;j<N-k;j++){
System.out.print("-");*
for(int*j=0;j<i;j++){
System.out.print(i);*
for(int*j=0;j<N-k;j++){
System.out.print("-");*
System.out.println();*
}
}
} mh_sh_highlight_all('java');
Four experiments are performed, each consisting of six tests. The number of test results for each experiment is entered by the user. Write a Java program using a nested loop to compute and display the average of the test results for each experiment.
You can run the program by entering the following test results:
Experiment 1 results:23.231.516.927.525.428.6
Experiment 2 results:34.845.227.936.833.439.4
Experiment 3 results:19.416.810.220.818.913.4
Experiment 4 results:36.939.549.245.142.750.6
Can be :
results = null;
results = new double[2];
results = new double[50];
results = new double[100];
How determine size of this table : System.out.println("table size=",???);
[URL] .... This is a link to the credentials that need to be met.
/* Constructors, getters and setters that will determine if the rectangles cover each other.*/
import java.util.Random;
import java.lang.Math.*;
class Rectangle{
int width = 50;
int length = 50;
int x = 90;
int y = 90;
[Code] ....
I am trying to print a loop inside an array of a greater size than the loop itself. Like for example I have an array of size 7 but it has only 3 elements.
int[] array=new int[7]
array[0]=2;
array[1]=3;
array[2]=4;
now what I want to do is print these three numbers in a loop so that my array[3]=2;array[4]=3;array[5]=4 ...... till the last one. Also the array could be any size and not just 7.
I have everything else working. My problem is that when i type "quit" to close the outer loop. It still runs the inner loop. The National Bank manager wants you to code a program that reads each clients charges to their Credit Card account and outputs the average charge per client and the overall average for the total number of clients in the Bank.
Hint: The OUTER LOOP in your program should allow the user the name of the client and end the program when the name entered is QUIT.In addition to the outer loop, you need AN INNER LOOP that will allow the user to input the clients charge to his/her account by entering one charge at a time and end inputting the charges whenever she/he enters -1 for a value. This INNER LOOP will performed the Add for all the charges entered for a client and count the number of charges entered.
After INNER LOOP ends, the program calculates an average for this student. The average is calculated by dividing the Total into the number of charges entered. The program prints the average charge for that client, adds the Total to a GrandTotal, assigns zero to the Total and counter variables before it loops back to get the grade for another client.Use DecimalFormat or NumberFormat to format the numeric output to dollar amounts.
The output of the program should something like this:
John Smith average $850.00
Maria Gonzalez average $90.67
Terry Lucas average $959.00
Mickey Mouse course average $6,050.89
National Bank client average $1,987.67
Code:
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
String name = "";
int charge = 0;
int count = -1;
int total = 1;
int grandtotal = 0;
int average = 0;
[code]....