Commit 69a397c

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merge: Added LucasSeries Implementation (#808)

* Added LucasSeries * Added more tests and renamed function * Changed RangeError to TypeError

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	`1`	`+/*`
	`2`	`+ Program to get the Nth Lucas Number`
	`3`	`+ Article on Lucas Number: https://en.wikipedia.org/wiki/Lucas_number`
	`4`	`+ Examples:`
	`5`	`+ > loopLucas(1)`
	`6`	`+ 1`
	`7`	`+ > loopLucas(20)`
	`8`	`+ 15127`
	`9`	`+ > loopLucas(100)`
	`10`	`+ 792070839848372100000`
	`11`	`+*/`
	`12`	`+`
	`13`	`+/**`
	`14`	`+ * @param {Number} index The position of the number you want to get from the Lucas Series`
	`15`	`+ */`
	`16`	`+function lucas (index) {`
	`17`	`+ // index can't be negative`
	`18`	`+ if (index < 0) throw new TypeError('Index cannot be Negative')`
	`19`	`+`
	`20`	`+ // index can't be a decimal`
	`21`	`+ if (Math.floor(index) !== index) throw new TypeError('Index cannot be a Decimal')`
	`22`	`+`
	`23`	`+ let a = 2`
	`24`	`+ let b = 1`
	`25`	`+ for (let i = 0; i < index; i++) {`
	`26`	`+ const temp = a + b`
	`27`	`+ a = b`
	`28`	`+ b = temp`
	`29`	`+ }`
	`30`	`+ return a`
	`31`	`+}`
	`32`	`+`
	`33`	`+export { lucas }`

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	`1`	`+import { lucas } from '../LucasSeries'`
	`2`	`+`
	`3`	`+describe('Nth Lucas Number', () => {`
	`4`	`+ it('should return the 20th Lucas Number', () => {`
	`5`	`+ expect(lucas(20)).toBe(15127)`
	`6`	`+ })`
	`7`	`+`
	`8`	`+ it('should return the 20th Lucas Number', () => {`
	`9`	`+ expect(lucas(0)).toBe(2)`
	`10`	`+ })`
	`11`	`+`
	`12`	`+ it('should return the 20th Lucas Number', () => {`
	`13`	`+ expect(lucas(100)).toBe(792070839848372100000)`
	`14`	`+ })`
	`15`	`+})`

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