sirnacnud / kth-largest-cpp

C++ solution to the kth largest element problem

kth-largest-cpp

C++ solution to the kth largest element problem

Problem

Given an unordered list of integers, find the kth largest elements in linear time, O(n).

Solution

The median of medians algorithm was implemented in order to guarantee the kth largest elements were found in linear time.

Program

The supplied c++ program takes a file containing numbers, delimited by newline, and a number for the kth largest numbers to find.

Example

Find the four largest numbers in the supplied sample file:

$ kth-largest-cpp sample 4
>> 22
>> 23
>> 24
>> 25