test15.js

// write a js program to get the largest even number from an array of integers

// ====================================== first method < basic > =======================================
var getLargestEvenNumber = (arr) => {
    var newArr = []
    for (let i = 0; i < arr.length; i++) {
        if (arr[i] % 2 == 0) {
            newArr.push(arr[i])
        }
    }
    newArr.sort;
    return newArr[newArr.length - 1]
}

// ========================================= second method < using math.max > ==============================
var getLargestEvenNumber = (arr) =>
    Math.max(...arr.filter(x => x % 2 == 0))
console.log(getLargestEvenNumber([1, 2, 3, 4, 5, 6, 7, 11, 123]))

// ========================================= third method < using find > ==============================
var getLargestEvenNumber = (arr) => {
    arr.sort((a, b) => b - a)
    return arr.find(x => x % 2 == 0)
}
console.log(getLargestEvenNumber([1, 2, 3, 4, 5, 6, 7, 11, 123]))