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carl-parrish/flattenMap.md

Last active December 25, 2017 16:14
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FlattenArray.js
Raw
js
```js
/********************
** Write some code, that will flatten an array
** of arbitrarily nested arrays of integers
** into a flat array of integers.
** e.g. [[1,2,[3]],4] -> [1,2,3,4]
************************/
var answer = [];
function flatten(source){
source.map(val => Array.isArray(val)? flatten(val) : answer.push(val));
return answer;
}
const myArray = [[1,2,[3]],4];
console.log(flatten(myArray)); // [1,2,3,4]
```
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