2805. Custom Interval π
Description
Function customInterval
Given a function fn
, a number delay
and a number period
, return a number id
.
customInterval
is a function that should execute the provided function fn
at intervals based on a linear pattern defined by the formula delay + period * count
.
The count
in the formula represents the number of times the interval has been executed starting from an initial value of 0
.
Function customClearInterval
Given the id
. id
is the returned value from the function customInterval
.
customClearInterval
should stop executing provided function fn
at intervals.
Note: The setTimeout
and setInterval
functions in Node.js return an object, not a number.
Example 1:
Input: delay = 50, period = 20, cancelTime = 225 Output: [50,120,210] Explanation: const t = performance.now() const result = [] const fn = () => { result.push(Math.floor(performance.now() - t)) } const id = customInterval(fn, delay, period) setTimeout(() => { customClearInterval(id) }, 225) 50 + 20 * 0 = 50 // 50ms - 1st function call 50 + 20 * 1 = 70 // 50ms + 70ms = 120ms - 2nd function call 50 + 20 * 2 = 90 // 50ms + 70ms + 90ms = 210ms - 3rd function call
Example 2:
Input: delay = 20, period = 20, cancelTime = 150 Output: [20,60,120] Explanation: 20 + 20 * 0 = 20 // 20ms - 1st function call 20 + 20 * 1 = 40 // 20ms + 40ms = 60ms - 2nd function call 20 + 20 * 2 = 60 // 20ms + 40ms + 60ms = 120ms - 3rd function call
Example 3:
Input: delay = 100, period = 200, cancelTime = 500 Output: [100,400] Explanation: 100 + 200 * 0 = 100 // 100ms - 1st function call 100 + 200 * 1 = 300 // 100ms + 300ms = 400ms - 2nd function call
Constraints:
20 <= delay, period <= 250
20 <= cancelTime <= 1000
Solutions
Solution 1
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