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Create reduceAndGroup.js

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	`1`	`+//Given an array of people having property, name and age. Use JavaScript reduce() function and group peoples by age.`
	`2`	`+function groupByAge(objectArray) {`
	`3`	`+ let newObject;`
	`4`	`+`
	`5`	`+ let reducer = (accumulator, currentValue) =>{`
	`6`	`+ console.log(accumulator)`
	`7`	`+ let currentAge = currentValue.age;`
	`8`	`+ if(accumulator[currentAge]){`
	`9`	`+ accumulator[currentAge].push(currentValue)`
	`10`	`+ }else{`
	`11`	`+ accumulator[currentAge] = []`
	`12`	`+ accumulator[currentAge].push(currentValue)`
	`13`	`+ }`
	`14`	`+ return accumulator;`
	`15`	`+ };`
	`16`	`+ newObject= objectArray.reduce(reducer,{})`
	`17`	`+ return newObject`
	`18`	`+}`
	`19`	`+`
	`20`	`+let obj = [`
	`21`	`+`
	`22`	`+ { name: 'John', age: 21 },`
	`23`	`+`
	`24`	`+ { name: 'Mike', age: 20 },`
	`25`	`+`
	`26`	`+ { name: 'Harvey', age: 20 }`
	`27`	`+`
	`28`	`+]`
	`29`	`+`
	`30`	`+groupByAge(obj)`
	`31`	`+module.exports = groupByAge;`

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