// DrJava saved history v2
// arrays again
//first declare the array reference variable
int dailySales[];
// now you MUST CREATE the array object
dailySales = new int[7];
// or you can declare the array and assign values in one move
// This works only with primitives.
int dailyPurchase [] = {59, 32,87,34,46,75,25};
// accessing an array using a for loop - notice that
// every array has a length field
for (int i = 0; i < dailyPurchase.length; i++) {
System.out.println(dailyPurchase[i]);
}
// 2-dimensional arrays (basically an array of arrays)
int sales [] [] = new int [3] [4];
// assign a value to row 2 column 2
sales [1] [1] = 43
sales [1] [1] 
// use a loop to assign values using an algorithm
// notice the nested for-loop required for 2-d arrays.
for (int i = 0; i  < sales.length; i++)
 {
    for (int j = 0; j < sales[i].length; j++) {
        sales[i][j] = (i+j)* (i+1);
     }
}

// to access the items in the array - we use a nested for-loop
for (int i = 0; i  < sales.length; i++)
 {
    for (int j = 0; j < sales[i].length; j++) {
        System.out.println(i + ", " + j + ", " +sales[i][j]);     }
}