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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 }
Updated on: 01-Oct-2020
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