2634. Filter Elements from Array

https://leetcode.com/problems/filter-elements-from-array

Javascript

var filter = function(arr, fn) {
    let result = []
    for (let i=0; i < arr.length; i++) {
        if (fn(arr[i], i)) {
            result.push(arr[i])
        }
    }
    return result
};

Typescript

function filter(arr: number[], fn: (n: number, i: number) => any): number[] {
    let result = []
    for (let i=0; i < arr.length; i++) {
        if (fn(arr[i], i)) {
            result.push(arr[i])
        }
    }
    return result
};