# Greatest element in a Multi-Dimensional Array in JavaScript

JavascriptWeb DevelopmentFront End TechnologyObject Oriented Programming

We have to write a simple function in JavaScript that takes in an array of Numbers (nested to any level) and return the greatest number present in the array.

## For example:

If the input array is −

const arr = [
34, 65, 67,
[
43, 76, 87, 23, 56, 7,
[
54, 7, 87, 23, 79, 994, 2
],
54
], 54, 4, 2
];

Then the output should be −

994

We will use recursion to find the greatest number in the array,

Therefore, let’s write the code for this function −

## Example

The code for this will be −

const arr = [
34, 65, 67,
[
43, 76, 87, 23, 56, 7,
[
54, 7, 87, 23, 79, 994, 2
],
54
], 54, 4, 2
];
const getGreatest = (arr, greatest = -Infinity) => {
for(let i = 0; i < arr.length; i++){
if(Array.isArray(arr[i])){
return getGreatest(arr[i], greatest);
};
if(arr[i] > greatest){
greatest = arr[i];
}
};
return greatest;
};
console.log(getGreatest(arr));

## Output

The output in the console will be −

994
Published on 20-Oct-2020 15:33:22