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Commit dc67506

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merge: Add pronic number implementation (#1023)
* feat: Add pronic number implementation * Add test to Math * Minor fixes * Minor style fixes * refactor: Store square root in a variable * Minor refactoring * fix: Change pronic number check logic Reduced time complexity from O(sqrt(n)) to O(1) * Minor style fixes * fix: Update pronic number check boolean equation * refactor: Change pronic number check condition * refactor: Add tests to Math * Minor style fixes * refactor: Change unit test logic
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‎Maths/IsPronic.js

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/*
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* Author: Akshay Dubey (https://github.com/itsAkshayDubey)
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* Pronic Number: https://en.wikipedia.org/wiki/Pronic_number
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* function to check if number is pronic.
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* return true if number is pronic.
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* else false
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*/
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/**
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* @function isPronic
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* @description -> Checking if number is pronic using product of two consecutive numbers
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* If number is a product of two consecutive numbers, then it is pronic
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* therefore, the function will return true
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*
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* If number is not a product of two consecutive numbers, then it is not pronic
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* therefore, the function will return false
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* @param {number} number
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* @returns {boolean}
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*/
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export const isPronic = (number) => {
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if (number === 0) {
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return true
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}
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const sqrt = Math.sqrt(number)
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return sqrt % 1 !== 0 && Math.ceil(sqrt) * Math.floor(sqrt) === number
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}

‎Maths/test/IsPronic.test.js

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import { isPronic } from '../IsPronic'
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const pronicNumbers = [0, 2, 6, 12, 20, 30, 42, 56, 72, 90, 110, 132, 156, 182, 210, 240, 272, 306, 342, 380, 420, 462, 506, 552, 600, 650, 702, 756, 812, 870, 930, 992, 1056, 1122, 1190, 1260, 1332, 1406, 1482, 1560, 1640, 1722, 1806, 1892, 1980, 2070, 2162, 2256, 2352, 2450, 2550]
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describe('Testing isPronic function', () => {
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for (let i = 0; i <= 2500; i++) {
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it('should return true', () => {
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const isPronicNumber = isPronic(i)
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expect(isPronicNumber).toBe(pronicNumbers.includes(i))
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})
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}
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})

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