如何从数组中删除偶数? [英] How can I remove even numbers from an array?

问题描述

我需要删除该数组的偶数

I need to remove the even numbers for this array

function removeEvens(numbers) {

}

/* Do not modify code below this line */

const oddNumbers = removeEvens([1, 2, 3, 4, 5]);
console.log(oddNumbers, `<-- should equal [1, 3, 5]`);

推荐答案

第一步是检查偶数的方法-您可以使用模数运算符(％)来检查余数当除以2时为0，表示数字为偶数.接下来，您可以过滤该数组仅包含通过此测试的数字:

The first step is how you check for evens - you can do this using the modulus operator (%) to see if the remainder when divided by 2 is 0, meaning that the number is even. Next you can filter the array to include only the numbers which pass this test:

function removeEvens(numbers) {
    return numbers.filter(n => n % 2 !== 0); // if a number is even, remove it
}

const oddNumbers = removeEvens([1, 2, 3, 4, 5]);
console.log(oddNumbers);

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