2960 - Count Tested Devices After Test Operations.

Easy

You are given a 0-indexed integer array batteryPercentages having length n, denoting the battery percentages of n 0-indexed devices.

Your task is to test each device i in order from 0 to n - 1, by performing the following test operations:

• If batteryPercentages[i] is greater than 0:

• Otherwise, move to the next device without performing any test.

Return an integer denoting the number of devices that will be tested after performing the test operations in order.

Example 1:

Input: batteryPercentages = 1,1,2,1,3

Output: 3

Explanation: Performing the test operations in order starting from device 0:

At device 0, batteryPercentages0> 0, so there is now 1 tested device, and batteryPercentages becomes 1,0,1,0,2.

At device 1, batteryPercentages1 == 0, so we move to the next device without testing.

At device 2, batteryPercentages2> 0, so there are now 2 tested devices, and batteryPercentages becomes 1,0,1,0,1.

At device 3, batteryPercentages3 == 0, so we move to the next device without testing.

At device 4, batteryPercentages4> 0, so there are now 3 tested devices, and batteryPercentages stays the same.

So, the answer is 3.

Example 2:

Input: batteryPercentages = 0,1,2

Output: 2

Explanation: Performing the test operations in order starting from device 0:

At device 0, batteryPercentages0 == 0, so we move to the next device without testing.

At device 1, batteryPercentages1> 0, so there is now 1 tested device, and batteryPercentages becomes 0,1,1.

At device 2, batteryPercentages2> 0, so there are now 2 tested devices, and batteryPercentages stays the same.

So, the answer is 2.

Constraints:

• 1 <= n == batteryPercentages.length <= 100

• 0 <= batteryPercentages[i] <= 100