Merge K Sorted Lists
CodingPhone ScreenSoftware EngineerReported Mar, 2026
Examples
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: []
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: []
You are given an array of k linked lists lists, where each list is sorted in ascending order.
Return the sorted linked list that is the result of merging all of the individual linked lists.
k == lists.length0 <= k <= 10^40 <= lists[i].length <= 500-10^4 <= lists[i][j] <= 10^4lists[i] is sorted in ascending order.The sum of lists[i].length will not exceed 10^4.