Final answer:
To compute the sum of all the numbers in an integer array, you can create a method that iterates through the array and adds each element to a sum variable. The time complexity of the method is O(N), where N represents the length of the array.
Step-by-step explanation:
To compute the sum of all the numbers in an integer array, you can create a method that iterates through the array and adds each element to a sum variable. If the array's length is zero, you can simply return zero as the sum. Here's an example code:
public int computeSum(int[] array) {
int sum = 0;
for (int i = 0; i < array.length; i++) {
sum += array[i];
}
return sum;
}
Regarding the big-O time analysis of this method, it has a time complexity of O(N), where N represents the length of the array. This is because the method iterates through each element of the array once, resulting in a linear time complexity.