Introduction to Using Data Sets · AP Computer Science A

AP Computer Science A Quiz

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DATA COLLECTIONS

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A store tracks weekly sales in an int[] and uses totals for restocking decisions. Consider: A farmer's market vendor records daily smoothie sales in an int[] for a 7-day festival to decide how much fruit to bring the next morning. The vendor wants to quickly compute the total sales for the week and the average per day, using a simple loop over the array. Since the data set size is fixed, the array avoids resizing overhead.

int[] dailySales = {5, 7, 6, 9, 8, 10, 4};
int total = 0;
for (int i = 0; i < dailySales.length; i++) {
    total = dailySales[i]; // update total
}
System.out.println(total);

Refer to the problem scenario in the passage, identify the error in the following code snippet and suggest a fix.

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