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Create findLengthUsingMap.js

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	`1`	`+//Given an array of strings, use the JavaScript map() function to return an array containing length of string at each index. The input array can be of length 0`
	`2`	`+//Return 0 if the string is null or undefined`
	`3`	`+`
	`4`	`+function findLength(arr) {`
	`5`	`+ arr = arr.map((str) => {`
	`6`	`+ if(str === null \|\| str === undefined) return 0`
	`7`	`+ else return str.length`
	`8`	`+ })`
	`9`	`+ return arr;`
	`10`	`+}`
	`11`	`+`
	`12`	`+module.exports = findLength;`
	`13`	`+const arr = [null]`
	`14`	`+console.log(findLength(arr))`

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