how a nested for loop increments the outer loop and then the inner loop and then when it runs the inside code.I've ran the program a few times but I'm just not understanding it, need little narrative to it?
I need to write a class,that will give me output like this:
* *** **** *** *
I have to use for loop,i know that i have to use nested for loops, for rows and columns. I just cant figure it out the thing with spaces,and how to turn it to count back.
Im trying to create a checkerboard pattern with 2 nested for loops . I need to output asterisk characters. Im supposed o use an n int so I dont know if im limited to that 1 int. Im only getting 1 line of asterisk.
* * * * * * * * * * * * * * * * * * * * package checkerboard; public class Checkerboard { public static void main(String[] args) { for (int row = 1; row < 6; row++){ System.out.print("* "); for (int col = 6; col < col; col++) {
// Demonstrate a two-dimensional array class TwoDArray { public static void main(String args[]) { int twoD[] [] = new int[4] [5]; int i, j, k = 0;
[Code] .....
Output:
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
(1) I don't understand how repeating the loop creates the structure of the output. Taking the second loop away and putting the "System.out.print(twoD[i] [j] + " " );" under k++ creates the output to print a number on each line. How do I write the code not having the second loop, assigning k to each value that is moved through the grid then printing it out but having the output the same?
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) {
I wrote this (for the variable name, this is just a small part of my program and I'm trying to get the pattern right so I didn't mind my variables at the moment):
Java Code:
public class NewFile{ public static void main(String []args){ int k = 0; for (int i=1 ; i<=5 ; i++) { { for (int h=2 ; h >= i ; h--)
I realize I should divide the code into a lower and upper triangle using two loops. However, I don't know how to break the first part. I did find the "trend" but I don't see how to implement it.
Question: 1. Declare and implement a class named Substrings. The class will contain the following data members and methods:
Data members: string S
Methods: setS() take a string as a parameter and store it in S printSub1(), printSub2(), printSub3(), printSub4() print all substrings of S. If S = "abcd",
Alright so after doing some googling and watching tutorials I managed to put together the first two but I still don't exactly understand how nested for loops work, however just a single loop I do understand.
Secondly, the 3rd and 4th prints are completely destroying my brain using for loops, which we are supposed to use. Check out my code below, also keep in mind the 3rd is giving errors and the 4th i had to revert back to the same as the first print temporarily because my code because so messed up. How to understand nested for loops better.
[code=Java]
import java.util.Scanner; class subString { String S; void setSubstring(String SS) { S = SS;
[Code] .....
Compiling: error for myS.printSub3 and myS.printSub4 is the same as 1 because i had to revert it after ruining the code.
So basically i have to read from a text file and get some information back from that and print to screen. Im quite confused and im not sure what loop i should use first to scan the text and receive certain information back?
Nested for-loops always throw me in a loop.I found a snippet that uses 2 for-loops to check if there is a duplicate element in the array:
/* * brute force way of checking if array contains duplicates in Java comparing each elements to all other elements of array complexity on order of O(n^2) not advised in production */ public static boolean bruteforce(String[] input) { for (int i = 0; i < input.length; i++) { for (int j = 0; j < input.length; j++) { if (input[i].equals(input[j]) && i != j) { return true; } } } return false; }
Let us say we have: String[] input = new String[] {"one","two","three","one"}
I'm having problems with the mid section of the rocket, specifically the bottom part of the mid section:
|../..../..| |.//..//.| |//////|
I'm having difficulty writing the for loop to correctly print the dots. You're supposed to incorporate a constant which allows you to adjust the size of the overall figure. The loop doesn't work when I adjust the size, only when the value of HEIGHT is 3. The loop, however, for some reason works with the top part of the mid section.
This is the for loop for the top section.
for (int dots = 1; dots <= -1 * line + 1 * HEIGHT; dots++) { System.out.print("."); }
This is the for loop for the bottom section.
for (int dots = -1 * line + 1 * HEIGHT; dots <= 1; dots++) { System.out.print("."); }
Usually reversing the iteration of the loop just requires flipping the conditions, right? But it didn't work this time for some reason. Why this doesn't work? I can post the code to my entire program for compiling.
When input validation for the first months rainfall is non-negative, this results in correct average rainfall.
When input validation is used for the first months rainfall I'm prompted to input a positive number, which is 2.
When asked to input rainfall, in inches, for each month, I begin with input -3, I am again prompted to re-enter a positive, I enter 3. What happens is, whichever positive integer I input after I had entered a negative for the first months rainfall, the average would be off by the positive number inputted.
package averagerainfall; import java.util.Scanner; public class AverageRainfall { public static void main(String[] args) { int maxYears; int totalMonths;
We were given a class lab that asks us to write a program that create a multidimensional array ( 5 x 5 ), populates the array using nested loops with letter from A until Y, and displays the array to the screen. and the result should look like this:
A B C D E F G H I J K L M N O P Q R S T U V W X Y
How to write this program.. I have tried all my best but the results are not coming like this..
I ask because I am writing a program in Java, but it was written in C OBjective and in C there is special coding that looks like this " %10s " and such.....is there something like this in Java?
I have wrote this class who read from text line by line and save the words in fileOnTable.. Now i don't know what to read in ReadOffer to save the words in object offers and return this.. One more question.. What JUnit test can write for this code..?
My requirement is to find the line number using multiline string. Here I need to extract the string between FROM and where clause(from the below string) and need to find the line number in the file
SELECT HL.LOCATION_ID,HPS.PARTY_SITE_ID,HCAS.CUST_ACCT_SITE_ID INTO LN_SITE_LOCATION_ID,LN_LOC_PARTY_SITE_ID,LN_CUST_ACCT_SITE_ID FROM HZ_LOCATIONS HL, HZ_PARTY_SITES HPS,
How do I make the file reader object move to the next line if there is no more input on the line. Here is my text and output file as you can see that my text file column cuts off on the 2nd line after 70. I want to read that next line which is 100 into my labs variable however its reading it into my final exams variable. I'll also post the code but I didn't think it was necessary.
textfile: 100908095 1008070 10070
output: Labs Projects Tests Final Exams 100908095 1008070100 70
[import java.util.Scanner; import java.io.*; public class MyGrades { public static void main (String[] args) throws IOException { int lab, project, test; int finalExam;//Par and Player values
If I want to read my file line by line and when it hits a certain value from that point it should start deleting the lines until the tag ends.Just curious will my code actually work at the moment or not because it goes through so many times then goes straight back to the variable declarations at the start of the method and never hits the console print line.
public void removeEnvironment(){ //declare variable to environment id String environmentID = "Environment id"; String lines = null; boolean lineFound = false; boolean end = false;
I'm creating a program that searches a txt file for a given string, then return the number line and the line itself. However, my testFile class isn't detecting my searchWord methods.
The searchWord and recursiveSearch is written in a java class called BasicFile
public List<String> searchWord(String key) throws Exception { LineNumberReader lnr = new LineNumberReader(new FileReader(f)); return recursiveSearch(lnr.readLine(), key, lnr); } public List<String> recursiveSearch(String currentLineText, String key, LineNumberReader lnr)
[code]....
Is it because I'm using a list instead of a string?