Summary Ranges

要和Missing Ranges联动。

public class Solution {
    public List<String> summaryRanges(int[] nums) {
        List<String> result = new LinkedList<>();
        int length = nums.length;
        for (int i = 0; i < length; i++) {
            int num = nums[i];
            while (i < length - 1 && nums[i] + 1 == nums[i + 1]) {
                i++;
            }
            if (num == nums[i]) {
                result.add(String.valueOf(num));
            } else {
                result.add(String.valueOf(num) + "->" + String.valueOf(nums[i]));
            }
        }
        return result;
    }
}