#1134Medium#18 in Qualcomm's list· asked at 33 companies
Merge K sorted Lists
Hosted on LeetCode
Solve it on LeetCode, track it here.
This problem's full statement lives on LeetCode. Open it in a new tab, then come back to mark it solved, add notes and keep your streak.
LeetCode Premium locked?
Most company-tagged LeetCode problems are behind Premium. If you have ChatGPT Plus or Claude Pro, ask it for the full statement, examples and constraints. The buttons below open a chat with the prompt already filled in.
What we know
Example 1
Input: lists = [[1,4,5],[1,3,4],[2,6]] Output: [1,1,2,3,4,4,5,6]
Example 2
Input: lists = [] Output: []
Example 3
Input: lists = [[]] Output: []
Constraints
- •
k == lists.length - •
0 <= k <= 10^4 - •
0 <= lists[i].length <= 500 - •
-10^4 <= lists[i][j] <= 10^4 - •
The sum of all list lengths will not exceed
10^4.