找到最接近 0 的数字

/*
 * Problem: Given an integer array nums of length n, return the number in nums that is closest to 0. 
 * If there are multiple answers, return the largest number.
 *
 * Approach using Java Streams:
 * 1. Convert the array nums to a stream.
 * 2. Use the reduce function to find the number closest to 0.
 * 3. The reduce function compares two numbers based on their absolute values.
 * 4. If the absolute values are equal, the reduce function keeps the larger number.
 * 5. Return the result of the reduction.
 */
public int findClosestNumber(int[] nums) {
    return Arrays.stream(nums)
        .reduce((a, b) -> Math.abs(a) < Math.abs(b) ? a : Math.abs(a) == Math.abs(b) ? Math.max(a, b) : b)
        .orElse(0);
}