# Absolute Difference of all pairwise consecutive elements in an array

Given an array of integers of N elements. The task is to print the absolute difference of all of the pairwise consecutive elements. Pairwise consecutive pairs of an array of size N are (a[i], a[i+1]) for all i ranging from 0 to N-2

Examples:

```Input: arr[] = {8, 5, 4, 3, 15, 20}
Output: 3, 1, 1, 12, 5

Input: arr[] = {5, 10, 15, 20}
Output: 5, 5, 5```

Approach: The solution is to traverse the array and calculate and print the absolute difference of every pair (arr[i], arr[i+1]).

Below is the implementation of the above approach:

## C++

 `// C++ program to print the absolute` `// difference of the consecutive elements` `#include ` `using` `namespace` `std;`   `// Function to print pairwise absolute` `// difference of consecutive elements` `void` `pairwiseDifference(``int` `arr[], ``int` `n)` `{` `    ``int` `diff;` `    ``for` `(``int` `i = 0; i < n - 1; i++) {`   `        ``// absolute difference between` `        ``// consecutive numbers` `        ``diff = ``abs``(arr[i] - arr[i + 1]);` `        ``cout << diff << ``" "``;` `    ``}` `}`   `// Driver Code` `int` `main()` `{` `    ``int` `arr[] = { 4, 10, 15, 5, 6 };` `    ``int` `n = ``sizeof``(arr) / ``sizeof``(arr[0]);`   `    ``pairwiseDifference(arr, n);`   `    ``return` `0;` `}`

## C

 `// C program to print the absolute` `// difference of the consecutive elements` `#include `   `int` `abs``(``int` `a)` `{` `  ``int` `abs` `= a;` `  ``if``(``abs` `< 0)` `    ``abs` `= ``abs` `* (-1);` `  ``return` `abs``;` `}`   `// Function to print pairwise absolute` `// difference of consecutive elements` `void` `pairwiseDifference(``int` `arr[], ``int` `n)` `{` `    ``int` `diff;` `    ``for` `(``int` `i = 0; i < n - 1; i++) {`   `        ``// absolute difference between` `        ``// consecutive numbers` `        ``diff = ``abs``(arr[i] - arr[i + 1]);` `        ``printf``(``"%d "``,diff);` `    ``}` `}`   `// Driver Code` `int` `main()` `{` `    ``int` `arr[] = { 4, 10, 15, 5, 6 };` `    ``int` `n = ``sizeof``(arr) / ``sizeof``(arr[0]);`   `    ``pairwiseDifference(arr, n);`   `    ``return` `0;` `}`   `// This code is contributed by kothavvsaakash.`

## Java

 `// Java program to print the absolute ` `// difference of the consecutive elements `   `class` `GFG{` `// Function to print pairwise absolute ` `// difference of consecutive elements ` `static` `void` `pairwiseDifference(``int` `arr[], ``int` `n) ` `{ ` `    ``int` `diff; ` `    ``for` `(``int` `i = ``0``; i < n - ``1``; i++) { `   `        ``// absolute difference between ` `        ``// consecutive numbers ` `        ``diff = Math.abs(arr[i] - arr[i + ``1``]); ` `        ``System.out.print(diff+``" "``); ` `    ``} ` `} `   `// Driver Code ` `public` `static` `void` `main(String[] args) ` `{ ` `    ``int` `arr[] = { ``4``, ``10``, ``15``, ``5``, ``6` `}; ` `    ``int` `n = arr.length; `   `    ``pairwiseDifference(arr, n); ` `} ` `}` `// This code is contributed by mits`

## Python 3

 `# Python 3 program to print the absolute` `# difference of the consecutive elements`   `# Function to print pairwise absolute` `# difference of consecutive elements` `def` `pairwiseDifference(arr, n):` `    `  `    ``for` `i ``in` `range``(n ``-` `1``) :`   `        ``# absolute difference between` `        ``# consecutive numbers` `        ``diff ``=` `abs``(arr[i] ``-` `arr[i ``+` `1``])` `        ``print``(diff , end ``=` `" "``)`   `# Driver Code` `if` `__name__``=``=``"__main__"``:` `    ``arr ``=` `[ ``4``, ``10``, ``15``, ``5``, ``6` `]` `    ``n ``=` `len``(arr)`   `    ``pairwiseDifference(arr, n)`   `# This code is contributed ` `# by ChitraNayal`

## C#

 `// C# program to print the absolute ` `// difference of the consecutive elements ` `using` `System;`   `class` `GFG{` `// Function to print pairwise absolute ` `// difference of consecutive elements ` `static` `void` `pairwiseDifference(``int` `[]arr, ``int` `n) ` `{ ` `    ``int` `diff; ` `    ``for` `(``int` `i = 0; i < n - 1; i++) { `   `        ``// absolute difference between ` `        ``// consecutive numbers ` `        ``diff = Math.Abs(arr[i] - arr[i + 1]); ` `        ``Console.WriteLine(diff+``" "``); ` `    ``} ` `} `   `// Driver Code ` `public` `static` `void` `Main(String[] args) ` `{ ` `    ``int` `[]arr = { 4, 10, 15, 5, 6 }; ` `    ``int` `n = arr.Length; `   `    ``pairwiseDifference(arr, n); ` `} ` `}`

## PHP

 ``

## Javascript

 ``

Output

`6 5 10 1 `

Complexity Analysis:

• Time complexity: O(n),
• Auxiliary Space: O(1)

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