LeetCode 1285: Find the Start and End Number of Continuous Ranges Solution

import java.util.ArrayList;
import java.util.List;

class Solution {
    public List<List<Integer>> findRanges(int[] nums) {
        List<List<Integer>> result = new ArrayList<>();
        
        int start = nums[0];
        int end = nums[0];
        
        for (int i = 1; i < nums.length; i++) {
            if (nums[i] == end + 1) {
                end = nums[i];
            } else {
                List<Integer> range = new ArrayList<>();
                range.add(start);
                range.add(end);
                result.add(range);
                
                start = nums[i];
                end = nums[i];
            }
        }
        
        List<Integer> range = new ArrayList<>();
        range.add(start);
        range.add(end);
        result.add(range);
        
        return result;
    }
}