Average Rainfall Main Class Using Nested For Loops Input Validation
Feb 23, 2014
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;
What is the main advantage of nested class? Rather making one class reside inside other, can't we achieve all by making it two separate classes with its own individuality?
I have written program for rainfall that will store and give total, average, least and most. The program stores the input of rainfall for each month. However at the end it suppose to print out the month with the least and most rainfall. I am getting this on the print for
The month with the most rainfall: [Ljava.lang.String;@79a7bd3b
and for
The month with the least rainfall: [D@7378aae2[Ljava.lang.String;@79a7bd3b
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 am assigned with a project that will as the user for the amount of days they would like data entered, then loop asking them for these numbers. once it reaches the entered amount of days it will display a menu for which the user can enter the number they want on the list and it will display the data. the menu has 6 items. Total, Average, Determine if its a Drought, Flood or normal rainfall, highest of data entered, lowest of data entered, and 6 is to quit the program.
So far i have total and average working properly. Still looking at how to display drought, flood, and normal.
Main problems, i cannot get highest and lowest to display correct data.
Also when entering 6, or an invalid menu choice, neither "goodbye" or "invalid choice, choose again" gets printed. Rather the loop for entering data continues.
import java.util.Scanner; public class RainAnalysis { /* * Project 1 This program will analyze the rainfall for the number of days a user inputs. */
public static void main(String[] args) { Scanner keyboard = new Scanner(System.in); int numOfDays = 0; double rainfallAmount = 0.0;
[Code] ....
Here is a sample output to show what happens when i put in 6 after the menu is displayed.
also i noticed that it does not say the correct day when displaying the lowest and highest rainfall. this is because i put count, i did not know what else to put in order to get the correct day.
how many days do you want to monitor rainfall?5
Enter the rainfall for day 1.01 Enter the rainfall for day 2.1 Enter the rainfall for day 36 Enter the rainfall for day 43 Enter the rainfall for day 51
Rainfall Data Display Menu: 1 - Display total rainfall. 2 - Display rain average for the period. 3 - Display if drought, flood, or normal conditions. 4 - Display the day and amount of the highest rainfall. 5 - Display the day and amount of the lowest rainfall. 6 - Quit the program.
Enter your choice: 4 Day5 has the highest rainfall with 6.0 inches.
Rainfall Data Display Menu: 1 - Display total rainfall. 2 - Display rain average for the period. 3 - Display if drought, flood, or normal conditions. 4 - Display the day and amount of the highest rainfall. 5 - Display the day and amount of the lowest rainfall. 6 - Quit the program.
Enter your choice: 5 Day5 has the lowest rainfall with 0.1 inches.
Rainfall Data Display Menu: 1 - Display total rainfall. 2 - Display rain average for the period. 3 - Display if drought, flood, or normal conditions. 4 - Display the day and amount of the highest rainfall. 5 - Display the day and amount of the lowest rainfall. 6 - Quit the program.
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.
import java.util.*; import java.text.*; public class Quiz { public static void main(String[] args){ Scanner s= new Scanner(System.in); int quests = 0; String input ="";
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:
I need to write an input validation while using the do-while statement. I feel like most of it is good except that it gets stuck inside the brackets of the do statement. After I enter an input, it just keeps asking me over and over for an input. Then I have to make it s if you enter an input that is out of range, you have to keep entering an input until it is in range.
Java Code:
do { System.out.print("Please enter the amount of spaces the letters will shift... "); shift = uInput.nextInt(); } mh_sh_highlight_all('java'); Java Code: public class ShiftEncoderDecoderDriver { public static void main(String[] args)
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..