给出一个区间的集合,请合并所有重叠的区间。
示例 1:
输入: [[1,3],[2,6],[8,10],[15,18]]
输出: [[1,6],[8,10],[15,18]]
解释: 区间 [1,3] 和 [2,6] 重叠, 将它们合并为 [1,6].
class Solution {
public:
vector<vector<int>> merge(vector<vector<int>>& intervals) {
sort(intervals.begin(), intervals.end());
vector<vector<int>> res;
for (int i = 0; i < intervals.size();) {
int t = intervals[i][1];
int j = i + 1;
while (j < intervals.size() && intervals[j][0] <= t) {
t = max(t, intervals[j][1]);
j++;
}
res.push_back({intervals[i][0], t});
i = j;
}
return res;
}
};