how to diselected a row in 2Darray on the basis of condition and find sum of other rows

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i wanted to print the sum of 2Darray on the bases of condition. if a row in 2Darray conation -1 integer add the sum of row and exclude -1 integer. else if a row in 2Darray does not conation -1 integer skip that row and don't add in sum

public class Mainclass {
    public static void main(String[] args) {
        int[][] places = { 
                { 2, 3, -1 }, 
                { -1, 4, 5 }, 
                { 2, 3, 4 } };

        int ch = -1, col;
        int sum = 0;

        for (int row = 0; row < places.length; row++) {
            for (col = 0; col < places[row].length; col++) {
                if (places[row][col] == ch) // skip the -1 integer in 2D array
                {
                }
                if (ch != places[row])
                // here i want to diselected the row that do not conatin -1
                // integer
                // skip row that does not contain -1
                {
                }
                sum += places[row][col];
                // print the sum of row that contain -1 and also exclude -1
                // integer in sum
            }
        }
        System.out.println(sum);
        // and the sum should be 2+3+4+5=14
    }
}

In case of -1 that can appear only once that will work:

int [][] places = {
        {2,3,-1},
        {-1,4,5},
        {2,3,4}
};

int sum=0;
for(int row=0;row<places.length;row++)
{
    if(Arrays.stream(places[row]).filter(x->x==-1).findAny().isPresent()){
        sum+=Arrays.stream(places[row]).sum()+1;
    }

}

output:

14

Program to find the Sum of each Row and each Column of a Matrix , The sum of each row and each column can be calculated by traversing through the matrix and adding up the elements. Below is the implementation of the above​  0 how to diselected a row in 2Darray on the basis of condition and find sum of other rows Aug 14 '18 0 Using comparator with multiple comparators Aug 6 '18 0 HashSet internal storing same hash bucket Jul 25 '18

You may compute a temporary sum for each row, that you will only add to the final sum is there was no -1 .

See this example with some comments :

   public static void main(final String args[]) throws IOException, ParseException {

        int[][] places = {
                { 2, 3, -1 },
                { -1, 4, 5 },
                { 2, 3, 4 }
        };

        int ch = -1, col;
        int sum = 0;
        for (int[] place : places) {

            int tempSum = 0; // sum of the current row only

            boolean containsMinusOne = false;

            for (col = 0; col < place.length; col++) {
                if (place[col] == ch) // skip the -1 integer in 2D array
                {
                    containsMinusOne = true;
                    continue; // skip the rest of this iteration, -1 won't be added to the temp sum below.
                }

                tempSum += place[col];

            }

            // if there was a -1, add the sum of this row
            if (containsMinusOne) {

                sum += tempSum;
            }

        }
        System.out.println(sum);

    }

Finding the Sum of Rows and Columns in a Two-Dimensional Array , This program shows you how to find the sum of rows and columns in a two how to use a Duration: 5:14 Posted: Jul 3, 2015 1 how to diselected a row in 2Darray on the basis of condition and find sum of other rows Aug 14 '18 0 how i can hidden the pdf file in External Storage Directory in android appliction Aug 2 '19 0 Retrieve data from database as pdf file Jul 11 '19

What about just use simple for...each? Seems to me it looks pretty simple and clear:

public static long sum(int[][] places) {
    long res = 0;

    for (int[] row : places) {
        int sum = 0;
        boolean apply = false;

        for (int col : row) {
            if (col != -1)
                sum += col;
            else
                apply = true;
        }

        res += apply ? sum : 0;
    }

    return res;
}

Example:

int[][] places = { { 2, 3, -1 }, { -1, 4, 5 }, { 2, 3, 4 } };
System.out.println(sum(places));    // 14

Javanotes 8.1, Section 7.5 -- Two-dimensional Arrays, The elements of a 2D array are arranged in rows and columns, and the new operator Each row, in turn, is a list of values separated by commas and enclosed If we use int[] as the base type, the type that we get is "int[][] meaning "​array of int[]" one-dimensional array, and each of those arrays can have a different length. Time complexity : O(n Log n) where n is number of rows. Here assumption is that the sort() function uses a O(n Log n) sorting algorithm. Here assumption is that the sort() function uses a O(n Log n) sorting algorithm.

The solution can be direct, finding row sum and keeping a boolean variable which checks if the row contains -1 or not.

if the value of the boolean variable is true, we add the row sum to the total, else skip it.

int [][] places = {
                {2,3,-1},
                {-1,4,5},
                {2,3,-1}
                };

int ch=-1,col;
int sum=0;
for(int row=0;row<places.length;row++)
{
        boolean rowCheck = false;
        int rowSum=0;
        for( col=0;col<places[row].length;col++)
        {
        rowSum+=places[row][col];
// print the sum of row that contain -1 and also  exclude -1 integer in sum

        if(places[row][col]==ch) // skip the -1 integer in 2D array
        {
         rowCheck=true;
         rowSum+=1;
         }
    }
    if(rowCheck)
        sum+=rowSum; 
}
System.out.println(sum);

TOPCAT, There are two basic ways to join tables together: top-to-bottom and side-by-side. These criteria give conditions for whether two items (table rows) count as If you want to calculate aggregating functions like sum, min, max etc on multiple Subset From Unselected Rows: Defines a new Row Subset  arrange() In the previous tutorial, you learn how to sort the values with the function sort(). The library dplyr has its sorting function. It works like a charm with the pipeline. The arrange() verb can reorder one or many rows, either ascending (default) or descending.

Here is a Stream api solution which is quite intuitive.

Arrays
    .stream(places)
    .filter(row -> Arrays.stream(row).anyMatch(x -> x == ch))
    .mapToInt(row -> Arrays.stream(row).filter(x -> x != ch).sum())
    .sum()
  1. Present the matrix into a stream of integer arrays.
  2. Filter any of the arrays that doesn't contain the special character.
  3. Filter the special characters in the particular integer array and sum all the other elements, return the sum to the outer stream.
  4. Sum up all the returned sums.

[PDF] TOPCAT, It is designed to cope well with large tables; a million rows by a Selecting a row can be configured to trigger an action, for instance for others probably not - to find out you can hover with the mouse to see has the same columns as the Base table, and a number of rows equal to the sum of the number of. Select random rows from a data frame. It’s possible to select either n random rows with the function sample_n() or a random fraction of rows with sample_frac(). We first use the function set.seed() to initiate random number generator engine. This important for users to reproduce the analysis.

[PDF] Two-Dimensional Arrays, dimensional arrays, a single line of elements. • Often data Each column is a different movie. 2 Create a 2D array with 3 rows and 4 columns and Find the average rating by the reviewer in row 2. double average = (double) sum / 4;. 7. 3. In this article we will discuss how to delete rows based in DataFrame by checking multiple conditions on column values. DataFrame provides a member function drop () i.e. It accepts a single or list of label names and deletes the corresponding rows or columns (based on value of axis parameter i.e. 0 for rows or 1 for columns).

[PDF] LabVIEW for Engineers, 2.2 Basic Math in LabVIEW—Using Functions 26 5.2 Sensors, Signals and Signal Conditioning 144. 5.3 Data Programs button and find the National Instruments LabVIEW icon in the list of Create SubVI A SubVI is a VI that will be used within another VI. The default is (all) rows (i.e., all rows after the starting row). Similar to arithmetic operations when we apply any comparison operator to Numpy Array, then it will be applied to each element in the array and a new bool Numpy Array will be created with values True or False. Suppose we have a Numpy Array i.e. #Create an Numpy Array containing elements from 5 to 30 but at equal interval of 2 arr = np.arange (5

[PDF] JMP Scripting Guide, SAS® and all other SAS Institute Inc. product or service names are registered trademarks This introduction shows you the basics of JMP Scripting Language (JSL). dt<<summary(Group(Group), sum(weight), output table name("newDt")); state for each row, so that any selected rows are deselected, and any unselected. The idea is to traverse the matrix row-wise and find the sum of elements in each row and check for every row if current sum is greater than the maximum sum obtained till the current row and update the maximum_sum accordingly.

Comments
  • What's wrong with the code? Does it work? Why doesn't it work? How does conation apply here?
  • Have a rowTotal. Have a specialCharFound boolean. If specialCharFound add rowTotal to grandTotal.
  • Add sysout at various places, and try to see the flow. Else debug and step through if you're using an IDE like Eclipse.
  • yes specialCharFound is -1 but i don't know how to to apply the condition and exlcude specialCharFound -1 in sum . how to diselected row in 2Darray
  • Nice way but You need to explain your solution not just throw it . (upvote anyway)
  • Thank you I hope to add explanations and perhaps a general case, do note is iterate twice over places[row] array so performance way it's not the best solution