allSameLength.js

/*
Coding in function ```cutIt```, function accept 1 parameter:```arr```. ```arr``` is a string array.

The first mission: Traversing ```arr```, find the shortest string length.

The second mission: Traversing ```arr``` again, intercept all strings to the shortest string length(Start from index0). you can use one of slice() substring() or substr() do it. return the result after finished the work.

for example:

```
cutIt(["ab","cde","fgh"]) should return ["ab","cd","fg"]
cutIt(["abc","defgh","ijklmn"]) should return ["abc","def","ijk"]
cutIt(["codewars","javascript","java"]) should return ["code","java","java"]
```
*/

//Answer//

let cutIt = a => a.map(x=>x.substr(0,Math.min(...a.map(x=>x.length))))