## Sum of two dimensional array

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the `array[time, value];`

I need to total/sum of value from this two dimensional array?

var array =[ [1361824790262, 90.48603343963623], [1361828390262, 500.18687307834625], [1361831990262, 296.05108177661896], [1361835590262, 423.1198309659958], [1361839190262, 11.86623752117157], [1361842790262, 296.38282561302185], [1361846390262, 424.31847417354584], [1361849990262, 100.07041704654694], [1361853590262, 434.8605388402939], [1361857190262, 434.8220944404602], [1361860790262, 183.61854946613312] ]; var sum = 0; //console.log(array.length); for (var i = 0; i < array.length; i++) { //console.log(array[i]); for (var j = 0; j < array[i].length; j++) { console.log(array[j][i]); sum += array[j][i]; } } console.log(sum);

Your question title implies you want to sum a two dimensional array—here's how you would do that:

array.reduce(function(a,b) { return a.concat(b) }) // flatten array .reduce(function(a,b) { return a + b }); // sum

To sum only the value portions as you made clear in your edit is even easier:

array.map(function(v) { return v[1] }) // second value of each .reduce(function(a,b) { return a + b }); // 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 dimensional array Duration: 5:14
Posted: Jul 3, 2015 I am working on a project where I have to read a file and enter the content into a 2D array. Then I have to sum each row, each column, and the perimeter of the matrix. I have everything working so

There's no need for two loops. This loops through the array and gives you each time/value pair. Simply sum the first index (second item) if each time-value pair.

var sum = 0; for(var i=0;i<array.length;i++){ console.log(array[i]); sum += array[i][1]; } console.log(sum);

Output:

[1361824790262, 90.48603343963623] [1361828390262, 500.18687307834625] [1361831990262, 296.05108177661896] [1361835590262, 423.1198309659958] [1361839190262, 11.86623752117157] [1361842790262, 296.38282561302185] [1361846390262, 424.31847417354584] [1361849990262, 100.07041704654694] [1361853590262, 434.8605388402939] [1361857190262, 434.8220944404602] [1361860790262, 183.61854946613312] 3195.7829563617706

**Prefix Sum of Matrix (Or 2D Array),** Prefix Sum of Matrix (Or 2D Array) Given a matrix (or 2D array) a[][] of integers, find prefix sum matrix for it. Let prefix sum matrix be psa[][]. The value of psa[i][j] contains sum of all values which are above it or on left of it. Sum of left diagonal elements of a two dimensional array Infokshetra -A Study Centre 42 C++ SUM OF LEFT DIAGONAL AND RIGHT DIAGONAL BY A Comprehensive Guide to Access - Part 1 of 2

Sum_of_2d_array(arr) { int sum_time =0; int sum_value=0; for(i=0;i<arr.length;i++) { sum_time = sum_time + arr[i,0]; } print(sum_time); for(i=0;i<arr.length;i++) { sum_value = sum_value + arr[i,1]; } print(sum_value); } If I understood your question correctly. I think this is what you want.

**C Program to Add Two Matrices Using Multi-dimensional Arrays,** C Program to Add Two Matrices Using Multi-dimensional Arrays &b[i][j]); } // adding two matrices for (i = 0; i < r; ++i) for (j = 0; j < c; ++j) { sum[i][j] = a[i][j] + b[i][j]; To sort array of Structure; Perform Tree Operations – insert, traversal, preorder,post order and in order; Find the sum of two one-dimensional arrays using Dynamic Memory Allocation; Stack PUSH & POP Implementation using Arrays; Program to remove duplicate element in an array; C Program to sort the matrix rows and columns

var arr = [[1361824790262, 90.48603343963623], [1361828390262, 500.18687307834625], [1361831990262, 296.05108177661896], [1361835590262, 423.1198309659958], [1361839190262, 11.86623752117157], [1361842790262, 296.38282561302185], [1361846390262, 424.31847417354584], [1361849990262, 100.07041704654694], [1361853590262, 434.8605388402939], [1361857190262, 434.8220944404602], [1361860790262, 183.61854946613312]]; var sum = 0; for(var i=0;i<arr.length;i++){ for(var j=0;j<arr[i].length;j++){ sum += arr[i][j]; } } console.log(sum);

This is the solution for get the total. I have test it.

**C Multidimensional Arrays (2d and 3d Array),** C program to find the sum of two matrices of order 2*2 #include <stdio.h> int main() { float a[2][2], b[2][2], Solution for •• 8. Write a method that returns the sum of a given row in a two-dimensional array. Complete this code:ArrayUtil.java1 public class ArrayUtil2…

**Java Program to Add Two Matrix Using Multi-dimensional Arrays,** In the above program, the two matrices are stored in 2d array, namely firstMatrix and secondMatrix . We've also defined the number of rows and columns and stored them in variables rows and columns respectively. Then, we initialize a new array of the given rows and columns called sum . Sum of all Array elements means add all array Elements. Suppose we have 4 Elements in array and we want to find there sum. arr=4 arr=2 arr=1 arr=6 Sum off all above elements are arr+arr+arr+arr=4+2+1+6=13 C++ program to Find Sum of an Array Elements

**[PDF] Two-Dimensional Arrays,** spreadsheet, which need a two-dimensional array. Each element in the 2D array must by the same type,. • either a double average = (double) sum / 4;. 7. 3. Two-Dimensional Arrays • Arrays that we have consider up to now are one-dimensional arrays, a single line of elements. • Often data come naturally in the form of a table, e.g., spreadsheet, which need a two-dimensional array. • Examples: • Lab book of multiple readings over several days • Periodic table

**Calculate sum of 2d array - Core Java Questions,** Calculate sum of 2d array - Core Java Questions - Arrays and Loops In Java : Arrays are very useful in reducing the number of variables created and in reducing Program to find the Sum of each Row and each Column of a Matrix. Given a matrix of order m*n, the task is to find out the sum of each row and each column of a matrix. Examples: Approach: The sum of each row and each column can be calculated by traversing through the matrix and adding up the elements.

##### Comments

- what if there are two two-dimensional arrays and add them like here i have created a SO question stackoverflow.com/questions/44850663/…