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Frequency of smaller and larger elements - JavaScript
Suppose, we have an array of literals like this −
const arr = [3, 5, 5, 2, 23, 4, 7, 8, 8, 9];
We are required to write a JavaScript function that takes in this array and a number, say n, and returns an object representing the count of elements greater than and smaller than n.
Example
Following is the code −
const arr = [3, 5, 5, 2, 23, 4, 7, 8, 8, 9]; const smallerLargerNumbers = (arr, num) => { return arr.reduce((acc, val) => { let { greater, smaller } = acc; if(val > num){ greater++; }; if(val < num){ smaller++; }; return { greater, smaller }; }, { greater: 0, smaller: 0 }); }; console.log(smallerLargerNumbers(arr, 3));
Output
This will produce the following output on console −
{ greater: 8, smaller: 1 }
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