# Delete array element in given index range [L – R]

Given an array A[] and size of array is N. The task is to delete element of array A[] are in given range L to R both are exclusive.

Examples:

```Input : N = 12
A[] = { 3, 5, 3, 4, 9, 3, 1, 6, 3, 11, 12, 3}
L = 2
R = 7
Output : 3 5 3 6 3 11 12 3
since A = 3 but this is exclude
A =  6 this also exclude

Input : N = 10
A[] ={ 5, 8, 11, 15, 26, 14, 19, 17, 10, 14 }
L = 4
R = 6
Output :5 8 11 15 26 19 17 10 14
```

## Recommended: Please try your approach on {IDE} first, before moving on to the solution.

A naive approach is to delete element in range L to R with extra space.

Below is the implementation of the above approach:

## C++

 `// C++ code to delete element ` `// in given range ` `#include ` `using` `namespace` `std; ` ` `  `// Delete L to R element ` `vector<``int``> deleteElement(``int` `A[], ``int` `L, ``int` `R, ``int` `N) ` `{ ` `    ``vector<``int``> B; ` ` `  `    ``for` `(``int` `i = 0; i < N; i++)  ` `        ``if` `(i <= L || i >= R)  ` `           ``B.push_back(A[i]);         ` `     `  `    ``return` `B; ` `} ` ` `  `// main Driver ` `int` `main() ` `{ ` `    ``int` `A[] = { 3, 5, 3, 4, 9, 3, 1, 6, 3, 11, 12, 3 }; ` `    ``int` `L = 2, R = 7; ` `    ``int` `n = ``sizeof``(A) / ``sizeof``(A); ` `    ``vector<``int``> res = deleteElement(A, L, R, n); ` `    ``for` `(``auto` `x : res) ` `        ``cout << x << ``" "``; ` `    ``return` `0; ` `} `

## Java

 `import` `java.util.Vector; ` ` `  `// Java code to delete element  ` `// in given range  ` `class` `GFG { ` `// Delete L to R element  ` ` `  `    ``static` `Vector deleteElement(``int` `A[], ``int` `L, ``int` `R, ``int` `N) { ` `        ``Vector B = ``new` `Vector<>(); ` ` `  `        ``for` `(``int` `i = ``0``; i < N; i++) { ` `            ``if` `(i <= L || i >= R) { ` `                ``B.add(A[i]); ` `            ``} ` `        ``} ` ` `  `        ``return` `B; ` `    ``} ` ` `  `// main Driver  ` `    ``public` `static` `void` `main(String[] args) { ` `        ``int` `A[] = {``3``, ``5``, ``3``, ``4``, ``9``, ``3``, ``1``, ``6``, ``3``, ``11``, ``12``, ``3``}; ` `        ``int` `L = ``2``, R = ``7``; ` `        ``int` `n = A.length; ` `        ``Vector res = deleteElement(A, L, R, n); ` `        ``for` `(Integer x : res) { ` `            ``System.out.print(x + ``" "``); ` `        ``} ` `    ``} ` `} ` `// This code is contributed by PrinciRaj1992 `

## Python3

 `# Python 3 code to delete element ` `# in given range ` ` `  `# Delete L to R element ` `def` `deleteElement(A, L, R, N): ` `    ``B ``=` `[] ` ` `  `    ``for` `i ``in` `range``(``0``, N, ``1``): ` `        ``if` `(i <``=` `L ``or` `i >``=` `R): ` `            ``B.append(A[i])  ` `     `  `    ``return` `B ` ` `  `# Driver Code ` `if` `__name__ ``=``=` `'__main__'``: ` `    ``A ``=` `[``3``, ``5``, ``3``, ``4``, ``9``, ``3``, ``1``, ` `             ``6``, ``3``, ``11``, ``12``, ``3``]  ` `    ``L ``=` `2` `    ``R ``=` `7` `    ``n ``=` `len``(A) ` `    ``res ``=` `deleteElement(A, L, R, n) ` `    ``for` `i ``in` `range``(``len``(res)): ` `        ``print``(res[i], end ``=` `" "``) ` ` `  `# THis code is implemented by ` `# Surendra_Gangwar `

## C#

 `// C# code to delete element  ` `// in given range  ` `using` `System;  ` `using` `System.Collections.Generic;  ` ` `  `class` `GFG  ` `{  ` `     `  `    ``// Delete L to R element  ` `    ``static` `List<``int``> deleteElement(``int` `[]A,  ` `                        ``int` `L, ``int` `R, ``int` `N)  ` `    ``{  ` `        ``List<``int``> B = ``new` `List<``int``>();  ` `        ``for` `(``int` `i = 0; i < N; i++) ` `        ``{  ` `            ``if` `(i <= L || i >= R)  ` `            ``{  ` `                ``B.Add(A[i]);  ` `            ``}  ` `        ``}  ` `        ``return` `B;  ` `    ``}  ` ` `  `    ``// Driver code ` `    ``public` `static` `void` `Main() ` `    ``{  ` `        ``int` `[]A = {3, 5, 3, 4, 9, 3, 1, 6,  ` `                            ``3, 11, 12, 3};  ` `        ``int` `L = 2, R = 7;  ` `        ``int` `n = A.Length;  ` `        ``List<``int``> res = deleteElement(A, L, R, n);  ` `        ``foreach` `(``int` `x ``in` `res)  ` `        ``{  ` `            ``Console.Write(x + ``" "``);  ` `        ``}  ` `    ``}  ` `} ` ` `  `// This code is contributed by Rajput-Ji `

## PHP

 `= ``\$R``) ` `            ``\$B``[] = ``\$A``[``\$i``]; ` `    ``} ` `    ``return` `\$B``; ` `} ` ` `  `// Driver Code ` `\$A` `= ``array``(3, 5, 3, 4, 9, 3, 1, ` `              ``6, 3, 11, 12, 3); ` `\$L` `= 2; ` `\$R` `= 7; ` `\$n` `= ``count``(``\$A``); ` `\$res` `= deleteElement(``\$A``, ``\$L``, ``\$R``, ``\$n``); ` `for` `(``\$i` `= 0; ``\$i` `< ``count``(``\$res``); ``\$i``++) ` `echo` `"\$res[\$i] "``; ` ` `  `// This code is implemented by ` `// Srathore ` `?> `

Output:

```3 5 3 6 3 11 12 3
```

Time Complexity: O(n)
Auxiliary Space : O(n)

An efficient solution without using extra space.
Below is the implementation of the above approach:

## C++

 `// C++ code to delete element ` `// in given range ` `#include ` `using` `namespace` `std; ` ` `  `// Delete L to R elements ` `int` `deleteElement(``int` `A[], ``int` `L, ``int` `R, ``int` `N) ` `{ ` `    ``int` `i, j = 0; ` `    ``for` `(i = 0; i < N; i++) { ` `        ``if` `(i <= L || i >= R) { ` `            ``A[j] = A[i]; ` `            ``j++; ` `        ``} ` `    ``} ` ` `  `    ``// Return size of Array ` `    ``// after delete element ` `    ``return` `j;  ` `} ` ` `  `// main Driver ` `int` `main() ` `{ ` `    ``int` `A[] = { 5, 8, 11, 15, 26, 14, 19, 17, 10, 14 }; ` `    ``int` `L = 2, R = 7; ` `    ``int` `n = ``sizeof``(A) / ``sizeof``(A); ` `    ``int` `res_size = deleteElement(A, L, R, n); ` `    ``for` `(``int` `i = 0; i < res_size; i++) ` `        ``cout << A[i] << ``" "``; ` `    ``return` `0; ` `} `

## Java

 `// Java code to delete element ` `// in given range ` `class` `GFG  ` `{ ` ` `  `// Delete L to R elements ` `static` `int` `deleteElement(``int` `A[], ``int` `L,  ` `                         ``int` `R, ``int` `N) ` `{ ` `    ``int` `i, j = ``0``; ` `    ``for` `(i = ``0``; i < N; i++)  ` `    ``{ ` `        ``if` `(i <= L || i >= R) ` `        ``{ ` `            ``A[j] = A[i]; ` `            ``j++; ` `        ``} ` `    ``} ` ` `  `    ``// Return size of Array ` `    ``// after delete element ` `    ``return` `j;  ` `} ` ` `  `// Driver Code ` `public` `static` `void` `main(String args[]) ` `{ ` `    ``int` `A[] = ``new` `int``[] { ``5``, ``8``, ``11``, ``15``, ``26``,  ` `                        ``14``, ``19``, ``17``, ``10``, ``14` `}; ` `    ``int` `L = ``2``, R = ``7``; ` `    ``int` `n = A.length; ` `    ``int` `res_size = deleteElement(A, L, R, n); ` `    ``for` `(``int` `i = ``0``; i < res_size; i++) ` `    ``System.out.print(A[i] + ``" "``); ` `} ` `} ` ` `  `// This code is contributed ` `// by Kirti_Mangal `

## Python 3

 `# Python 3 program  to delete element  ` `# in given range ` ` `  `# Function to delete L to R element  ` `def` `deleteElement(A, L, R, N) : ` ` `  `    ``j ``=` `0` `    ``for` `i ``in` `range``(N) : ` `        ``if` `i <``=` `L ``or` `i >``=` `R : ` `            ``A[j] ``=` `A[i] ` `            ``j ``+``=` `1` ` `  `    ``# Return size of Array  ` `    ``# after delete element  ` `    ``return` `j ` `     `  `# Driver Code ` `if` `__name__ ``=``=` `"__main__"` `: ` ` `  `    ``A ``=` `[``5``, ``8``, ``11``, ``15``, ``26``, ``14``, ``19``, ``17``, ``10``, ``14``] ` `    ``L, R ``=` `2``,``7` ` `  `    ``n ``=` `len``(A) ` `    ``res_size ``=` `deleteElement(A, L, R, n) ` ` `  `    ``for` `i ``in` `range``(res_size) : ` `        ``print``(A[i],end ``=` `" "``) ` ` `  `# This code is contributed by ANKITRAI1 `

## C#

 `// C# code to delete element  ` `// in given range  ` `using` `System; ` ` `  `class` `GFG  ` `{  ` ` `  `// Delete L to R elements  ` `static` `int` `deleteElement(``int` `[]A, ``int` `L,  ` `                         ``int` `R, ``int` `N)  ` `{  ` `    ``int` `i, j = 0;  ` `    ``for` `(i = 0; i < N; i++)  ` `    ``{  ` `        ``if` `(i <= L || i >= R)  ` `        ``{  ` `            ``A[j] = A[i];  ` `            ``j++;  ` `        ``}  ` `    ``}  ` ` `  `    ``// Return size of Array  ` `    ``// after delete element  ` `    ``return` `j;  ` `}  ` ` `  `// Driver Code  ` `public` `static` `void` `Main()  ` `{  ` `    ``int` `[]A = ``new` `int``[] { 5, 8, 11, 15, 26,  ` `                         ``14, 19, 17, 10, 14 };  ` `    ``int` `L = 2, R = 7;  ` `    ``int` `n = A.Length;  ` `    ``int` `res_size = deleteElement(A, L, R, n);  ` `    ``for` `(``int` `i = 0; i < res_size; i++)  ` `        ``Console.Write(A[i] + ``" "``);  ` `}  ` `}  ` ` `  `// This code is contributed by 29AjayKumar `

## PHP

 `= ``\$R``) ` `        ``{ ` `            ``\$A``[``\$j``] = ``\$A``[``\$i``]; ` `            ``\$j``++; ` `        ``} ` `    ``} ` ` `  `    ``// Return size of Array ` `    ``// after delete element ` `    ``return` `\$j``;  ` `} ` ` `  `// Driver Code ` `\$A` `= ``array``(5, 8, 11, 15, 26,  ` `           ``14, 19, 17, 10, 14); ` `\$L` `= 2; ` `\$R` `= 7; ` `\$n` `= sizeof(``\$A``); ` `\$res_size` `= deleteElement(``\$A``, ``\$L``, ``\$R``, ``\$n``); ` `for` `(``\$i` `= 0; ``\$i` `< ``\$res_size``; ``\$i``++) ` `{ ` `    ``echo` `(``\$A``[``\$i``]); ` `    ``echo` `(``" "``); ` `}  ` ` `  `// This code is contributed  ` `// by Shivi_Aggarwal ` `?> `

Output:

```5 8 11 17 10 14
```

Time Complexity: O(n)
Auxiliary Space : O(1)

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