Summary Ranges

def summaryRanges(nums: list[int]) -> list[str]:
    result = []
    i = 0
    while i < len(nums):
        start = nums[i]
        while i + 1 < len(nums) and nums[i + 1] == nums[i] + 1:
            i += 1
        end = nums[i]
        if start == end:
            result.append(str(start))
        else:
            result.append(f"{start}->{end}")
        i += 1
    return result

class Solution {
public:
    vector<string> summaryRanges(vector<int>& nums) {
        vector<string> result;
        int i = 0;
        while (i < nums.size()) {
            long long start = nums[i];
            while (i + 1 < nums.size() && (long long)nums[i + 1] == nums[i] + 1) {
                i++;
            }
            long long end = nums[i];
            if (start == end) {
                result.push_back(to_string(start));
            } else {
                result.push_back(to_string(start) + "->" + to_string(end));
            }
            i++;
        }
        return result;
    }
};

function summaryRanges(nums: number[]): string[] {
    const result: string[] = [];
    let i = 0;
    while (i < nums.length) {
        const start = nums[i];
        while (i + 1 < nums.length && nums[i + 1] === nums[i] + 1) {
            i++;
        }
        const end = nums[i];
        if (start === end) {
            result.push(String(start));
        } else {
            result.push(`${start}->${end}`);
        }
        i++;
    }
    return result;
}