Merge K Sorted Arrays Problem Statement
Given 'K' different arrays that are individually sorted in ascending order, merge all these arrays into a single array that is also sorted in ascending order.
Input
The first line of input contains an integer T, the number of test cases.
The first line of each test case contains an integer that denotes the value of K.
The next 2*K lines of each test case follow:
The first line contains an integer ‘N’ denoting the size of the array.
The second line contains N space-separated integers.
Output
The first and only line of output contains space-separated elements of the merged and sorted array, as described in the task.
Example
Input:
1
2
3
1 3 5
2
2 6
Output:
1 2 3 5 6
Constraints
- 1 ≤ T ≤ 5
- 1 ≤ K ≤ 5
- 1 ≤ N ≤ 20
- -10^5 ≤ DATA ≤ 10^5
- Time Limit: 1 sec
Note
You don’t have to print anything; it has already been taken care of. Just implement the function.

AnswerBot
4mo
Merge K sorted arrays into a single sorted array.
Create a min heap to store the first element of each array along with the array index.
Pop the top element from the heap, add it to the result array, an...read more
Help your peers!
Add answer anonymously...
UBS C Developer interview questions & answers
A C Developer was asked Q. Preorder Traversal of a BST Problem Statement Given an array PREORDER representi...read more
A C Developer was asked Q. Find Maximum Number by At-most K Swaps Given an array of non-negative integers r...read more
A C Developer was asked Q. BST Node Deletion Problem Given a binary search tree (BST) and a key value K, yo...read more
Popular interview questions of C Developer
A C Developer was asked Q1. Preorder Traversal of a BST Problem Statement Given an array PREORDER representi...read more
A C Developer was asked Q2. Find Maximum Number by At-most K Swaps Given an array of non-negative integers r...read more
A C Developer was asked Q3. BST Node Deletion Problem Given a binary search tree (BST) and a key value K, yo...read more
Stay ahead in your career. Get AmbitionBox app


Trusted by over 1.5 Crore job seekers to find their right fit company
80 L+
Reviews
10L+
Interviews
4 Cr+
Salaries
1.5 Cr+
Users
Contribute to help millions
AmbitionBox Awards
Get AmbitionBox app

