# Sum of middle row and column in Matrix

Given a integer matrix of odd dimensions (3 * 3, 5 * 5). then the task is to find the sum of the middle row & column elements.

Examples:

```Input :  2 5 7
3 7 2
5 6 9
Output : Sum of middle row = 12
Sum of middle column = 18

Input :  1 3 5 6 7
3 5 3 2 1
1 2 3 4 5
7 9 2 1 6
9 1 5 3 2
Output : Sum of middle row = 15
Sum of middle column = 18

```

## CPP

 `// C++ program to find sum of  ` `// middle row and column in matrix ` `#include ` `using` `namespace` `std; ` `const` `int` `MAX = 100; ` ` `  `void` `middlesum(``int` `mat[][MAX], ``int` `n) ` `{ ` ` `  `    ``int`  `row_sum = 0, col_sum = 0; ` `     `  `    ``//loop for sum of row ` `    ``for` `(``int` `i = 0; i < n; i++) ` `        ``row_sum += mat[n / 2][i]; ` `     `  `    ``cout << ``"Sum of middle row = "` `                    ``<< row_sum<

## Java

 `// java  program to find sum of  ` `// middle row and column in matrix ` ` `  `import` `java.io.*; ` ` `  `class` `GFG { ` `     `  ` `  `static`  `int` `MAX = ``100``; ` ` `  ` ``static` `void` `middlesum(``int` `mat[][], ``int` `n) ` `{ ` ` `  `    ``int` `row_sum = ``0``, col_sum = ``0``; ` `     `  `    ``// loop for sum of row ` `    ``for` `(``int` `i = ``0``; i < n; i++) ` `        ``row_sum += mat[n / ``2``][i]; ` `     `  `    ``System.out.println ( ``"Sum of middle row = "` `                  ``+ row_sum); ` `     `  `    ``// loop for sum of column ` `    ``for` `(``int` `i = ``0``; i < n; i++) ` `        ``col_sum += mat[i][n / ``2``]; ` `     `  `    ``System.out.println ( ``"Sum of middle column = "` `                 ``+ col_sum); ` `} ` ` `  `// Driver function ` `    ``public` `static` `void` `main (String[] args) { ` `        ``int` `mat[][] = {{``2``, ``5``, ``7``}, ` `                    ``{``3``, ``7``, ``2``},  ` `                    ``{``5``, ``6``, ``9``}}; ` `     `  `        ``middlesum(mat, ``3``); ` `     `  `    ``} ` `} ` ` `  `// This code is contributed by vt_m. `

## Python3

 `# Python program to find sum of  ` `# middle row and column in matrix ` ` `  `  `  `def` `middlesum(mat,n): ` `  `  `    ``row_sum ``=` `0` `    ``col_sum ``=` `0` `      `  `    ``# loop for sum of row ` `    ``for` `i ``in` `range``(n): ` `        ``row_sum ``+``=` `mat[n ``/``/` `2``][i] ` `      `  `    ``print``(``"Sum of middle row = "``, ` `                     ``row_sum) ` `      `  `    ``# loop for sum of column ` `    ``for` `i ``in` `range``(n): ` `        ``col_sum ``+``=` `mat[i][n ``/``/` `2``] ` `      `  `    ``print``(``"Sum of middle column = "``, ` `                            ``col_sum) ` ` `  `# Driver code ` `mat``=` `[[``2``, ``5``, ``7``], ` `     ``[``3``, ``7``, ``2``],  ` `     ``[``5``, ``6``, ``9``]] ` `      `  `middlesum(mat, ``3``) ` ` `  `# This code is contributed ` `# by Anant Agarwal. `

## C#

 `// C# program to find sum of  ` `// middle row and column in matrix ` `using` `System; ` ` `  `class` `GFG { ` `     `  ` `  `    ``//static int MAX = 100; ` `     `  `    ``static` `void` `middlesum(``int` `[,]mat, ``int` `n) ` `    ``{ ` `     `  `        ``int` `row_sum = 0, col_sum = 0; ` `         `  `        ``// loop for sum of row ` `        ``for` `(``int` `i = 0; i < n; i++) ` `            ``row_sum += mat[n / 2, i]; ` `         `  `        ``Console.WriteLine ( ``"Sum of middle row = "` `                    ``+ row_sum); ` `         `  `        ``// loop for sum of column ` `        ``for` `(``int` `i = 0; i < n; i++) ` `            ``col_sum += mat[i, n / 2]; ` `         `  `        ``Console.WriteLine ( ``"Sum of middle column = "` `                            ``+ col_sum); ` `    ``} ` ` `  `    ``// Driver function ` `    ``public` `static` `void` `Main () { ` `        ``int` `[,]mat = {{2, 5, 7}, ` `                    ``{3, 7, 2},  ` `                    ``{5, 6, 9}}; ` `     `  `        ``middlesum(mat, 3); ` `     `  `    ``} ` `} ` ` `  `// This code is contributed by vt_m. `

## PHP

 ` `

Output:

```Sum of middle row = 12
Sum of middle column = 18```

Time Complexity: O(n)

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