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Commit b83abac

ashokdey ashokdey

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Merge pull request knaxus#94 from iamvalentin23/master

Added factorial problem and solution

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src/_Problems_/factorial
- index.js
- index.test.js

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`‎src/_Problems_/factorial/index.js‎`

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	`1`	`+function factorial(num) {`
	`2`	`+ if (num === 1) return num;`
	`3`	`+ else return num * factorial(num - 1);`
	`4`	`+}`
	`5`	`+`
	`6`	`+module.exports = {`
	`7`	`+ factorial,`
	`8`	`+ };`

`‎src/_Problems_/factorial/index.test.js‎`

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	`1`	`+const { factorial } = require('.');`
	`2`	`+`
	`3`	`+describe('Factorial', () => {`
	`4`	`+ it('Should return 24', () => {`
	`5`	`+ expect(factorial(4)).toEqual(24);`
	`6`	`+ });`
	`7`	`+`
	`8`	`+ it('Should return 1', () => {`
	`9`	`+ expect(factorial(1)).toEqual(1);`
	`10`	`+ });`
	`11`	`+`
	`12`	`+ it('Should return 120', () => {`
	`13`	`+ expect(factorial(5)).toEqual(120);`
	`14`	`+ });`
	`15`	`+});`

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