1，题目

2，思路

循环遍历满足条件就记录，最后返回结果值

3，代码

public class Leetcode2239 {
    public static void main(String[] args) {
        System.out.println(new Solution2239().findClosestNumber(new int[]{-4, -2, 1, 4, 8}));
    }
}

class Solution2239 {
    public int findClosestNumber(int[] nums) {
        int num = nums[0];
        for (int i = 1; i < nums.length; i++) {
            int a = Math.abs(num);
            int b = Math.abs(nums[i]);
            if (a == b) {
                num = num > nums[i] ? num : nums[i];
            } else {
                num = a > b ? nums[i] : num;
            }
        }
        return num;
    }
}