# Sorting array except elements in a subarray

• Difficulty Level : Medium
• Last Updated : 06 Apr, 2021

Given an array A positive integers, sort the array in ascending order such that element in given subarray (start and end indexes are input) in unsorted array stay unmoved and all other elements are sorted.
Examples :

```Input : arr[] = {10, 4, 11, 7, 6, 20}
l = 1, u = 3
Output : arr[] = {6, 4, 11, 7, 10, 20}
We sort elements except arr[1..3] which
is {11, 7, 6}.

Input : arr[] = {5, 4, 3, 12, 14, 9};
l = 1, u = 2;
Output : arr[] = {5, 4, 3, 9, 12, 14 }
We sort elements except arr[1..2] which
is {4, 3}. ```

Approach : Copy all elements except the given limit of given array to another array. Then sort the other array using a sorting algorithm. Finally again copy the sorted array to original array. While copying, skip given subarray.

## C++

 `// CPP program to sort all elements except``// given subarray.``#include ``using` `namespace` `std;` `// Sort whole array a[] except elements in``// range a[l..r]``void` `sortExceptUandL(``int` `a[], ``int` `l, ``int` `u, ``int` `n)``{``    ``// Copy all those element that need``    ``// to be sorted to an auxiliary``    ``// array b[]``    ``int` `b[n - (u - l + 1)];``    ``for` `(``int` `i = 0; i < l; i++)``         ``b[i] = a[i];``    ``for` `(``int` `i = u+1; i < n; i++)``         ``b[l + (i - (u+1))] = a[i];   ` `    ``// sort the array b``    ``sort(b, b + n - (u - l + 1));` `    ``// Copy sorted elements back to a[]``    ``for` `(``int` `i = 0; i < l; i++)``         ``a[i] = b[i];``    ``for` `(``int` `i = u+1; i < n; i++)``         ``a[i] = b[l + (i - (u+1))];``}` `// Driver code``int` `main()``{``    ``int` `a[] = { 5, 4, 3, 12, 14, 9 };``    ``int` `n = ``sizeof``(a) / ``sizeof``(a[0]);``    ``int` `l = 2, u = 4;``    ``sortExceptUandL(a, l, u, n);``    ``for` `(``int` `i = 0; i < n; i++)``        ``cout << a[i] << ``" "``;``}`

## Java

 `// Java program to sort all elements except``// given subarray.``import` `java.util.Arrays;``import` `java.io.*;` `public` `class` `GFG {``    ` `    ``// Sort whole array a[] except elements in``    ``// range a[l..r]``    ``public` `static` `void` `sortExceptUandL(``int` `a[],``                           ``int` `l, ``int` `u, ``int` `n)``    ``{``        ` `        ``// Copy all those element that need``        ``// to be sorted to an auxiliary``        ``// array b[]``        ``int` `b[] = ``new` `int``[n - (u - l + ``1``)];``        ` `        ``for` `(``int` `i = ``0``; i < l; i++)``            ``b[i] = a[i];``        ``for` `(``int` `i = u+``1``; i < n; i++)``            ``b[l + (i - (u+``1``))] = a[i];``    ` `        ``// sort the array b``        ``Arrays.sort(b);` `        ``// Copy sorted elements back to a[]``        ``for` `(``int` `i = ``0``; i < l; i++)``            ``a[i] = b[i];``        ``for` `(``int` `i = u+``1``; i < n; i++)``            ``a[i] = b[l + (i - (u+``1``))];``    ``}``    ``// Driver code``    ``public` `static` `void` `main(String args[])``    ``{``        ``int` `a[] = { ``5``, ``4``, ``3``, ``12``, ``14``, ``9` `};``        ``int` `n = a.length;``        ``int` `l = ``2``, u = ``4``;``        ` `        ``sortExceptUandL(a, l, u, n);``        ` `        ``for` `(``int` `i = ``0``; i < n; i++)``            ``System.out.print(a[i] + ``" "``);``    ``}``}` `// This code is contributed by Manish Shaw``// (manishshaw1)`

## Python3

 `# Python3 program to sort all elements``# except given subarray.` `# Sort whole array a[] except elements in``# range a[l..r]``def` `sortExceptUandL(a, l, u, n) :``    ` `    ``# Copy all those element that need``    ``# to be sorted to an auxiliary``    ``# array b[]``    ``b ``=` `[``0``] ``*` `(n ``-` `(u ``-` `l ``+` `1``))``    ` `    ``for` `i ``in` `range``(``0``, l) :``        ``b[i] ``=` `a[i]``        ` `    ``for` `i ``in` `range``(u``+``1``, n) :``        ``b[l ``+` `(i ``-` `(u``+``1``))] ``=` `a[i]` `    ``# sort the array b``    ``b.sort()` `    ``# Copy sorted elements back to a[]``    ``for` `i ``in` `range``(``0``, l) :``        ``a[i] ``=` `b[i]``        ` `    ``for` `i ``in` `range``(u``+``1``, n) :``        ``a[i] ``=` `b[l ``+` `(i ``-` `(u``+``1``))]` `# Driver code``a ``=` `[ ``5``, ``4``, ``3``, ``12``, ``14``, ``9` `]``n ``=` `len``(a)``l ``=` `2``u ``=` `4``sortExceptUandL(a, l, u, n)` `for` `i ``in` `range``(``0``, n) :``    ``print` `(``"{} "``.``format``(a[i]), end``=``"")``    ` `# This code is contributed by``# Manish Shaw (manishshaw1)`

## C#

 `// C# program to sort all elements except``// given subarray.``using` `System;``using` `System.Collections.Generic;` `class` `GFG {``    ` `    ``// Sort whole array a[] except elements in``    ``// range a[l..r]``    ``static` `void` `sortExceptUandL(``int` `[]a, ``int` `l,``                                 ``int` `u, ``int` `n)``    ``{``        ` `        ``// Copy all those element that need``        ``// to be sorted to an auxiliary``        ``// array b[]``        ``int``[] b = ``new` `int``[n - (u-l+1)];``        ` `        ``for` `(``int` `i = 0; i < l; i++)``            ``b[i] = a[i];``            ` `        ``for` `(``int` `i = u+1; i < n; i++)``            ``b[l + (i - (u+1))] = a[i];``    ` `        ``// sort the array b``        ``Array.Sort<``int``>(b, 0, n - (u - l + 1));``    ` `        ``// Copy sorted elements back to a[]``        ``for` `(``int` `i = 0; i < l; i++)``            ``a[i] = b[i];``            ` `        ``for` `(``int` `i = u+1; i < n; i++)``            ``a[i] = b[l + (i - (u+1))];``    ``}``    ` `    ``// Driver code``    ``public` `static` `void` `Main()``    ``{``        ``int` `[]a = { 5, 4, 3, 12, 14, 9 };``        ``int` `n = a.Length;``        ``int` `l = 2, u = 4;``        ` `        ``sortExceptUandL(a, l, u, n);``        ` `        ``for` `(``int` `i = 0; i < n; i++)``            ``Console.Write(a[i] + ``" "``);``    ``}``}` `// This code is contributed by Manish Shaw``// (manishshaw1)`

## PHP

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## Javascript

 ``
Output :
`4 5 3 12 14 9`

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