Counter Class

Easy~10 min

Implement a Counter class that tracks an integer count.

The Counter class should support the following operations:

Counter() — Initialize the counter with a count of 0.
increment() — Increase the count by 1.
decrement() — Decrease the count by 1.
getCount() — Return the current count.
reset() — Reset the count to 0.

Examples

Example 1

Input:

["Counter","increment","increment","increment","getCount","decrement","getCount","reset","getCount"]
[[],[],[],[],[],[],[],[],[]]

Output: [null,null,null,null,3,null,2,null,0]

Explanation: Counter counter = new Counter(); counter.increment(); // count = 1 counter.increment(); // count = 2 counter.increment(); // count = 3 counter.getCount(); // return 3 counter.decrement(); // count = 2 counter.getCount(); // return 2 counter.reset(); // count = 0 counter.getCount(); // return 0

Constraints

At most 1000 calls will be made to increment, decrement, getCount, and reset
The count can be negative (decrementing below 0 is allowed)

Code

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Output

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