2665. Counter II
Write a function createCounter. It should accept an initial integer init. It should return an object with three functions.
The three functions are:
increment()increases the current value by 1 and then returns it.decrement()reduces the current value by 1 and then returns it.reset()sets the current value toinitand then returns it.
Example 1:
Input: init = 5, calls = ["increment","reset","decrement"] Output: [6,5,4] Explanation: const counter = createCounter(5); counter.increment(); // 6 counter.reset(); // 5 counter.decrement(); // 4
Example 2:
Input: init = 0, calls = ["increment","increment","decrement","reset","reset"] Output: [1,2,1,0,0] Explanation: const counter = createCounter(0); counter.increment(); // 1 counter.increment(); // 2 counter.decrement(); // 1 counter.reset(); // 0 counter.reset(); // 0
Constraints:
-1000 <= init <= 10000 <= calls.length <= 1000calls[i]is one of "increment", "decrement" and "reset"
GoogleHints open one at a time
Hint 1
You can return an object with methods.
Hint 2
Initialize a variable for currentCount. Inside these methods, add the appropriate logic which mutates currentCount.
Similar problems
CounterEasyLoading editor…
1/**
2 * @param {integer} init
3 * @return { increment: Function, decrement: Function, reset: Function }
4 */
5var createCounter = function(init) {
6
7};
8
9/**
10 * const counter = createCounter(5)
11 * counter.increment(); // 6
12 * counter.reset(); // 5
13 * counter.decrement(); // 4
14 */
Starter codeJavaScriptSpaces: 4
Loading editor…
1/**
2 * @param {integer} init
3 * @return { increment: Function, decrement: Function, reset: Function }
4 */
5var createCounter = function(init) {
6
7};
8
9/**
10 * const counter = createCounter(5)
11 * counter.increment(); // 6
12 * counter.reset(); // 5
13 * counter.decrement(); // 4
14 */
Starter codeJavaScriptSpaces: 4
Examples
Input
5 ["increment","reset","decrement"]
Input
0 ["increment","increment","decrement","reset","reset"]
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