Geeksforgeeks

Error

Given a non null integer matrix Grid of dimensions NxM.Calculate the sum of its elements.

**Example 1:**

**Input:**
N=2,M=3
Grid=
[[1,0,1],
[-8,9,-2]]
**Output:**
1
**Explanation:**
The sum of all elements of the matrix is
(1+0+1-8+9-2)=1.

**Example 2:**

**Input:**
N=3,M=5
Grid=
[[1,0,1,0,1],
[0,1,0,1,0],
[-1,-1,-1,-1,-1]]
**Output:**
0
**Explanation:**
The sum of all elements of the matrix are
(1+0+1+0+1+0+1+0+1+0-1-1-1-1-1)=0.

**Your Task:**

You don't need to read input or print anything.Your task is to complete the function **sumOfMatrix()** which takes two integers N ,M and a 2D array Grid as input parameters and returns the sum of all the elements of the Grid.

**Expected Time Complexity:**O(N*M)

**Expected Auxillary Space:**O(1)

**Constraints:**

1<=N,M<=1000

-1000<=Grid[i][j]<=1000

We are replacing the old Disqus forum with the new Discussions section given below.

Click here to view old Disqus comments.

Click here to view old Disqus comments.

Login to report an issue on this page.

We strongly recommend solving this problem on your own before viewing its editorial. Do you still want to view the editorial?

YesLoading...

Sum of elements in a matrix

...