Search⌘ K
AI Features
Home
Courses
Grokking the Coding Interview Patterns in C++

Solution: Find K Pairs with Smallest Sums

Explore methods to find the k pairs with the smallest sums from two sorted arrays. Learn to implement an optimized k-way merge using a min heap to efficiently identify pairs without generating all combinations. Understand the time and space complexity to solve this common coding interview problem.

We'll cover the following...

Statement

You are given two integer arrays, list1 and list2, sorted in non-decreasing order, and an integer, k.

A pair (u, v)(u, \space v) is defined as one element uu chosen from list1 and one element vv chosen from list2.

Your task is to return the k pairs (u1, v1),(u2, v2),...,(uk, vk)(u1, \space v1), (u2, \space v2), ..., (uk, \space vk) whose sums u1+v1,u2+v2,...,uk+vku1 + v1, u2 + v2, ..., uk + vk ...