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2960. Count Tested Devices After Test Operations 👍

  • Time: $O(n)$
  • Space: $O(1)$
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class Solution {
 public:
  int countTestedDevices(vector<int>& batteryPercentages) {
    int ans = 0;

    for (const int batteryPercentage : batteryPercentages)
      if (batteryPercentage - ans > 0)
        ++ans;

    return ans;
  }
};

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class Solution {
  public int countTestedDevices(int[] batteryPercentages) {
    int ans = 0;

    for (final int batteryPercentage : batteryPercentages)
      if (batteryPercentage - ans > 0)
        ++ans;

    return ans;
  }
}

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class Solution:
  def countTestedDevices(self, batteryPercentages: list[int]) -> int:
    ans = 0

    for batteryPercentage in batteryPercentages:
      if batteryPercentage - ans > 0:
        ans += 1

    return ans