One Dimentional Array Problem
Write an application that inputs five numbers, each of which is between 10 and 100, in inclusive. As each number is read, display it only if it is not a duplicate of a number already used. Provide for the "worst case," in which all five numbers are different. Use the smallest array to solve this problem. Display the complete set of unique values input after the user inputs each new value.
What I have so far is this only...
int array[] = {32, 18, 64, 18, 35};
System.out.printf("%s%8s\n", "Index", "Value");
for(int counter = 0; counter < array.length; counter++){
System.out.println(" " + counter + " " + array[counter]);
}Someone please help me with this... it's due tomrow and I have no clue how to check if same number has been entered and return the value of 0 for it.
yeah i know it does
everything works
i just had to switch up 2 values because it was giving me a reversed solution
that array[k] into j, also i just switched all the variables into the common i use a lot.
public class Duplication {
* Method main
* @param args
public void duplicate(){
int array[] = {32, 18, 64, 18, 64};
System.out.printf("%s%8s\n", "Index", "Value");
for (int counter1 = 0; counter1 < array.length; counter1++){
for (int counter2 = 0; counter2 < array.length; counter2++){
if ((array[counter1] == array[counter2]) && (counter2 != counter1)){
array[counter2] = 0;
System.out.printf("%3d%9d\n", counter1, array[counter1]);
public static void main(String[] args) {
Duplication dupe = new Duplication();
dupe.duplicate();
}Once again, thank you so much
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hey all,
i'm having a dumb array problem, I cannot figure out what I've done wrong !
I've set up an empty array of JButtons (because that '4' is actually a variable in my code)
HERE IS THE CODE
//===========================
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//===========================
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buttons[g].setEnabled(true);
line, I just get the ouput, and it is:
null 0
null 1
null 2
null 3
Ok, I know I'm probably making one dumb little mistake, but I have no idea what it is right now, Please Help !! thanks,
KngusWhen you want to use an array, you declare it (which you did), construct it (which you did), and initialize it (which the VM did). When you initialize an array of primitives, the primitives get their default value (0 for signed int types, 0.0 for float types, false for boolean, null-character for char) and so do object references (null).
You are setting up an array of object references. When the VM initializes it, the elements of the array (i.e. the references to the JButtons) are set to null. That's why you're getting the NullPointerException. You need additional code, something along the lines of this:
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AG -
I have an multi dimentional array
it has 5 columns and 8 rows
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
etc
if i remove the row beginning [1][0]
how can I get all the ones passed that row to shuffle up to fill the gap?
A B C D E
K L M N O
P Q R S T
U V W X Y
ends up as
A B C D E
K L M N O
P Q R S T
U V W X Y
Code would be lovely, I am new to this programming lark and I am not sure i like it :'(This is something done best (as previously suggested) with collections. Look into the tutorial and APIs for ArrayList and such. However, if you need to use arrays, here is a program that does (rather poorly I would think...)
public class MultiArrayTest {
public static void printData(char[][] data, int numRows, int numCols) {
for (int r = 0; r < numRows; r++) {
for (int c = 0; c < numCols; c++){
System.out.print("" + data[r][c] + " ");
System.out.println(" ");
System.out.println(" ");
public static int deleteRow(char[][] data, int row, int maxRows, int maxCols) {
for (int r = (row-1); r < (maxRows-1); r++){
for (int c = 0; c < maxCols; c++) {
data[r][c] = data[r+1][c];
return maxRows-1;
public static void main(String[] args) {
char[][] data = { {'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'} };
int maxRows = 5;
int maxCols = 5;
printData(data, maxRows, maxCols);
maxRows = deleteRow(data,3,maxRows,maxCols);
printData(data, maxRows, maxCols);
} -
I need to get the information from a table which has been populated at an earlier point in the program, and convert it to numbers, and then break it up into its individual elements. Both ways of doing this in my attached vi work, but the one method throws three 0's in between columns, when I resize the 2D array to 1D. Any idea why? Is there an easier way to go about this?
Thanks, Geoff
Attachments:
Array Problem.vi 26 KBYour original table contains 3 extra row which generate 3 rows of zeroes. Your 2D array actually contains 35 elements. the reshape function truncates to 20 elements. After transposing, you throw away nonzero elements while before rehshaping all zeroes are in the tail giving the false apperance of correct behavior.
The attached modification gives you a button to fix the table size so it works correctly.
LabVIEW Champion . Do more with less code and in less time .
Attachments:
ArrayProblemMOD.vi 41 KB -
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Deleting row of zero in one dim array
In my application, I am using the first column of the table as a selection from the combo box. The table is converted to one dimension array of 200 rows and 1 column, Some of the rows have zero value which is visible in the combo box selection , I need to remove the rows containig zero before linking to combo pbox can it be possible
With regards
anusreeHi,
Please find attached the VI doing what tst has explained
The For-loop indexes each element from the Input Array, Insert the element into the new array if it is a non-zero.
If it is a zero, simply shift the array without any insertion.
Cheers!
Ian F
Since LabVIEW 5.1... 7.1.1... 2009, 2010
依恩与LabVIEW
LVVILIB.blogspot.com
Attachments:
Remove 0s from array.vi 23 KB -
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