# Partition a set into two subsets such that difference between max of one and min of other is minimized

• Difficulty Level : Easy
• Last Updated : 05 Apr, 2021

Given an array arr[] of N integers, the task is to split the array into two subsets such that the absolute difference between the maximum of first subset and minimum of second subset is minimum.
Examples:

Input: arr[] = {3, 1, 2, 6, 4}
Output:
Explanation:
Splitting the given array in two subsets, A = [1, 2, 4], B = [3, 6]. Difference of maximum of first set is 4 and minimum of second set is 3 and their difference is 1.
Input: arr[] = {2, 1, 3, 2, 4, 3}
Output:
Explanation:
Splitting the given array in two subsets, A = [1, 2, 2, 3], B = [3, 4]. Difference of maximum of first set is 3 and minimum of second set is 3 and their difference is 0.

Approach: To solve the above problem we have to find the two integers such that m and n such that max of first set is m and the min of second set is n. The idea is to sort the given array ascending order and after sorting the array, the minimum difference between the consecutive element is the required minimum difference after partitioning the array elements into subsets.
Below is the implementation of above approach:

## C++

 `// C++ program for the above approach` `#include ``using` `namespace` `std;` `// Function to split the array``int` `splitArray(``int` `arr[], ``int` `N)``{``    ``// Sort the array in increasing order``    ``sort(arr, arr + N);` `    ``int` `result = INT_MAX;` `    ``// Calculating the max difference``    ``// between consecutive elements``    ``for` `(``int` `i = 1; i < N; i++) {``        ``result = min(result,``                     ``arr[i] - arr[i - 1]);``    ``}` `    ``// Return the final minimum difference``    ``return` `result;``}` `// Driver Code``int` `main()``{``    ``// Given array arr[]``    ``int` `arr[] = { 3, 1, 2, 6, 4 };` `    ``// Size of array``    ``int` `N = ``sizeof``(arr) / ``sizeof``(arr);` `    ``// Function Call``    ``cout << splitArray(arr, N);``    ``return` `0;``}`

## Java

 `// java program for the above approach``import` `java.util.*;``class` `GFG{` `// Function to split the array``static` `int` `splitArray(``int` `arr[], ``int` `N)``{``    ``// Sort the array in increasing order``    ``Arrays.sort(arr);` `    ``int` `result = Integer.MAX_VALUE;` `    ``// Calculating the max difference``    ``// between consecutive elements``    ``for` `(``int` `i = ``1``; i < N; i++)``    ``{``        ``result = Math.min(result,``                          ``arr[i] - arr[i - ``1``]);``    ``}` `    ``// Return the final minimum difference``    ``return` `result;``}` `// Driver Code``public` `static` `void` `main(String[] args)``{``    ``// Given array arr[]``    ``int` `arr[] = { ``3``, ``1``, ``2``, ``6``, ``4` `};` `    ``// Size of array``    ``int` `N = arr.length;` `    ``// Function Call``    ``System.out.print(splitArray(arr, N));``}``}` `// This code is contributed by shivanisinghss2110`

## Python3

 `# Python3 program for the above approach` `# Function to split the array``def` `splitArray(arr, N):``    ` `    ``# Sort the array in increasing``    ``# order``    ``arr ``=` `sorted``(arr)` `    ``result ``=` `10` `*``*` `9` `    ``# Calculating the max difference``    ``# between consecutive elements``    ``for` `i ``in` `range``(``1``, N):``        ``result ``=` `min``(result, arr[i] ``-` `arr[i ``-` `1``])` `    ``# Return the final minimum difference``    ``return` `result` `# Driver Code``if` `__name__ ``=``=` `'__main__'``:``    ` `    ``# Given array arr[]``    ``arr ``=` `[ ``3``, ``1``, ``2``, ``6``, ``4` `]` `    ``# Size of array``    ``N ``=` `len``(arr)` `    ``# Function Call``    ``print``(splitArray(arr, N))` `# This code is contributed by mohit kumar 29`

## C#

 `// C# program for the above approach``using` `System;``class` `GFG{` `// Function to split the array``static` `int` `splitArray(``int` `[]arr, ``int` `N)``{``    ``// Sort the array in increasing order``    ``Array.Sort(arr);` `    ``int` `result = Int32.MaxValue;` `    ``// Calculating the max difference``    ``// between consecutive elements``    ``for` `(``int` `i = 1; i < N; i++)``    ``{``        ``result = Math.Min(result,``                          ``arr[i] - arr[i - 1]);``    ``}` `    ``// Return the final minimum difference``    ``return` `result;``}` `// Driver Code``public` `static` `void` `Main()``{``    ``// Given array arr[]``    ``int` `[]arr = { 3, 1, 2, 6, 4 };` `    ``// Size of array``    ``int` `N = arr.Length;` `    ``// Function Call``    ``Console.Write(splitArray(arr, N));``}``}` `// This code is contributed by Code_Mech`

## Javascript

 ``

Output:

`1`

Time Complexity: O(N*log N)

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