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Greatest element in a Multi-Dimensional Array in JavaScript
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
Updated on: 20-Oct-2020
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