Magic square program java
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Provide details and share your research! The integers from 1 to n 2 are inserted along diagonals, starting in the middle of first row and heading in a northeasterly direction. Hence, we get the result that concludes that these numbers will form a magic square. I am not helping someone who wants me to do the work when they have one hell of a starting point. If such a move means you fall off the square, wrap around to the row or column on the opposite side. If you trace the next 2 cycles when j is 1 and j is 2 , you will find that the condition stays the same.

Lines 53-61 contain statements to calculate the sum of numbers on this diagonal. If it does not exist in the array, return true. Therefore, line 59 is skipped. Do you need similar project to be completed? Your output for 3-by-3 magic square would look like: Sum of rows: 15 15 15 Sum of columns: 15 15 15 Sum of diagonals: 15 15 The array is a magic square. So with the current input, the statements on lines 41-49, 54-60, and 65-72 are skipped. However, this time, we add a condition on line 56 to ensure that only the numbers of particular cells will be considered.

But the comparator for UserComparator is not being found for some reason. . Notice that the sum of row index and column index of each of these cells are the same, which is 2? Anyways, first error: Your first error can be taken care of by rewriting line 1 to this: import java. I have changed different indices values and the program returns false. I also recommend moving the check fullSquare to the beginning of the isMagic function, because there's no need to check if it isn't a square. Have a look at the link and see if anything leaps out at you. I have set classpath and also run a hello world program.

Apr 24, 2014 So I built this comparator exactly the same way I built my others that are working. My algorithm continually puts out false according to the isMagic method for when it checks if it's Magic. Magic Square Program - File Not Found Exception Error Apr 25, 2014 I am working on a magic square program. You can easily assign them to local variables, and your code becomes much better readable. I edited the code to check both the row and columns at the same time. If they are, we can say that it is a magic square.

Now, with a 2D array, we can have multiple collections of data, visualised as multiple rows of cells which are arranged close together, forming rows and columns. Edit: you're probably missing the logic that's in my isSquare method, too. On line 25 and 26 we have a for loop to calculate the sum of numbers on the first row. In order to determine whether it is a magic square, we need to calculate the sum of each row, column, and diagonal, and check whether they are all the same. I find it simplest to never use them rather than to find the narrow circumstances where it will work. After that, you continue with row 1, followed by column 1, then row 2 and column 2, and so on alternating between rows and columns. When you go off an edge of the array, which you do at the very first step, continue from the opposite edge.

Also I started programming about 1. Mar 21, 2015 I am creating a simple ArrayList program that would enable one to input their username to it using a scanner. Yup, so technically, your program is not yet complete. I'm fully aware that I could just use g. All the rest will be done by our service. Feb 21, 2015 getting the value of the selected radio button.

This, in turn, defines a method called that you'll probably find very useful. In other words, so far, the rule of a magic square is satisfied. A magic square is an arrangement of unrepeated integer numbers in a square grid, where the sum of numbers in each row, column, and the main and secondary diagonals, all add up to the same number. If your actual code looks anything like what it looks like in your posts, no, it's not quite there yet. There is a story about a huge flood in China a long time ago.

Now we move to the crucial part of the program. Create this code using a two dimensional array. Util does not exist import. Here, we already have 1 known value from row 0 , so only need to explore 3 unknowns by picking 2 and computing the 3rd. Since you only use it once, I wouldn't bother with the sum variable. In this example, we will read a series of 9 numbers and arrange them in a 3×3 matrix. Then for the given number of rows you will prompt the user to enter each row of numbers.

As you may have guessed, the second diagonal refers to the numbers that lie on an imaginary line that run across the square from top right to bottom left. What is a 2-dimensional 2D array? Then continue exploration of the rows and columns, alternating between rows and columns as you go. Well, in previous examples, we use a single row of connected boxes to visualise the concept of a one-dimensional array which we simply call an array to hold a collection of data. But i keep getting false when i run the program? For example, in the first outer cycle when j is 0 , the sum of all numbers in the first column is calculated. To find where to place the next number, move diagonally upwards to the right i.

We can do even better, at the expense of determining a more complicated exploration path. I prefer to put the { on the same line as its control statement. Remember that we set the initial value of magic to true, and so far this value has not changed. I apologize if I made a mistake in my wording. Can i get some direction on this please.