You are given a 2D array of sales data where the first column is Product ID and the second column is the quantity. Write a function to take this list of data and return a new 2D array with the total sales for each product ID. code example

Example 1: c fill 2d array

// Either
int disp[2][4] = {
  {10, 11, 12, 13},
  {14, 15, 16, 17}
};

// Or 
int disp[2][4] = { 10, 11, 12, 13, 14, 15, 16, 17};

// OR
int i, j;
for (i = 0; i < HEIGHT; i++) { // iterate through rows
  for (j = 0; j < WIDTH; j++) { // iterate through columns
    disp[i][j] = disp[i][j];
  }
}

Example 2: 2d arrays | java

int[][] arr = new int[row][column];