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Check if a number is jumbled or not
• Difficulty Level : Basic
• Last Updated : 27 Apr, 2021

Write a program to check if a given integer is jumbled or not. A number is said to be Jumbled if for every digit, its neighbours digit differs by max 1.
Examples :

```Input : 6765
Output : True
All neighbour digits differ by atmost 1.

Input : 1223
Output : True

Input : 1235
Output : False```

To find if a number is jumbled, we just need to check if a digit has a neighbour
with difference greater than 1. If such digit is found, the number is non-jumbled.
Below is the implementation of above idea :

C++

 `// CPP code to check if a``// number is jumbled or not``#include ``using` `namespace` `std;` `// Function to check if a``// number is jumbled or not``bool` `checkJumbled(``int` `num)``{``    ``// Single digit number``    ``if` `(num / 10 == 0)``        ``return` `true``;` `    ``// Checking every digit``    ``// through a loop``    ``while` `(num != 0)``    ``{` `        ``// All digits were checked``        ``if` `(num / 10 == 0)``            ``return` `true``;` `        ``// Digit at index i``        ``int` `digit1 = num % 10;` `        ``// Digit at index i-1``        ``int` `digit2 = (num / 10) % 10;` `        ``// If difference is``        ``// greater than 1``        ``if` `(``abs``(digit2 - digit1) > 1)``            ``return` `false``;` `        ``num = num / 10;``    ``}` `    ``// Number checked``    ``return` `true``;``}` `// Driver code``int` `main()``{` `    ``//-1234 to be checked``    ``int` `num = -1234;` `    ``if` `(checkJumbled(num))``        ``cout << ``"True \n"``;``    ``else``        ``cout << ``"False \n"``;` `    ``// 287 to be checked``    ``num = -1247;` `    ``if` `(checkJumbled(num))``        ``cout << ``"True \n"``;``    ``else``        ``cout << ``"False \n"``;` `    ``return` `0;``}`

Java

 `// Java code to check if a``// number is jumbled or not``import` `java.io.*;` `class` `GFG``{``    ` `    ``// Function to check if a``    ``// number is jumbled or not``    ``static` `boolean` `checkJumbled(``int` `num)``    ``{``        ``// Single digit number``        ``if` `(num / ``10` `== ``0``)``            ``return` `true``;``    ` `        ``// Checking every digit``        ``// through a loop``        ``while` `(num != ``0``)``        ``{``    ` `            ``// All digits were checked``            ``if` `(num / ``10` `== ``0``)``                ``return` `true``;``    ` `            ``// Digit at index i``            ``int` `digit1 = num % ``10``;``    ` `            ``// Digit at index i-1``            ``int` `digit2 = (num / ``10``) % ``10``;``    ` `            ``// If difference is``            ``// greater than 1``            ``if` `(Math.abs(digit2 - digit1) > ``1``)``                ``return` `false``;``    ` `            ``num = num / ``10``;``        ``}``    ` `        ``// Number checked``        ``return` `true``;``    ``}``    ` `    ``// Driver code``    ``public` `static` `void` `main (String[]args)``    ``{``        ``//-1234 to be checked``        ``int` `num = -``1234``;``    ` `        ``if` `(checkJumbled(num))``            ``System.out.println(``"True "``);``        ``else``            ``System.out.println(``"False "``);``    ` `        ``// 287 to be checked``        ``num = -``1247``;``    ` `        ``if` `(checkJumbled(num))``            ``System.out.println(``"True "``);``                ` `        ``else``            ``System.out.println(``"False "``);``            ` `    ``}``}` `// This code is contributed by vt_m.`

Python

 `# Python code to check if``# a number is jumbled or not` `# Function to check if a``# number is jumbled or not``def` `checkJumbled(num):` `    ``# Single digit number``    ``if` `(num ``/` `10` `=``=` `0``):``        ``return` `True` `    ``# Checking every digit``    ``# through a loop``    ``while` `(num !``=` `0``):``        ` `        ``# All digits were checked``        ``if` `(num ``/` `10` `=``=` `0``):``            ``return` `True` `        ``# Digit at index i``        ``digit1 ``=` `num ``%` `10` `        ``# Digit at index i-1``        ``digit2 ``=` `(num ``/` `10``) ``%` `10` `        ``# If difference is``        ``# greater than 1``        ``if` `(``abs``(digit2 ``-` `digit1) > ``1``):``            ``return` `False` `        ``num ``=` `num ``/` `10``        ` `    ``# Number checked``    ``return` `True``    ` `# Driver code` `# -1234 to be checked``num ``=` `-``1234``if` `(checkJumbled(``abs``(num))):``    ``print` `"True "``else``:``    ``print` `"False"``    ` `# -1247 to be checked``num ``=` `-``1247``if` `(checkJumbled(``abs``(num))):``    ``print` `"True "``else``:``    ``print` `"False"` `# This code is contributed``# by Sachin Bisht`

C#

 `// C# code to check if a number``// is jumbled or not``using` `System;` `class` `GFG``{``    ` `    ``// Function to check if a``    ``// number is jumbled or not``    ``static` `bool` `checkJumbled(``int` `num)``    ``{``        ` `        ``// Single digit number``        ``if` `(num / 10 == 0)``            ``return` `true``;``    ` `        ``// Checking every digit``        ``// through a loop``        ``while` `(num != 0)``        ``{``    ` `            ``// All digits were checked``            ``if` `(num / 10 == 0)``                ``return` `true``;``    ` `            ``// Digit at index i``            ``int` `digit1 = num % 10;``    ` `            ``// Digit at index i-1``            ``int` `digit2 = (num / 10) % 10;``    ` `            ``// If difference is``            ``// greater than 1``            ``if` `(Math.Abs(digit2 - digit1) > 1)``                ``return` `false``;``    ` `            ``num = num / 10;``        ``}``    ` `        ``// Number checked``        ``return` `true``;``    ``}``    ` `    ``// Driver code``    ``public` `static` `void` `Main ()``    ``{``        ``//-1234 to be checked``        ``int` `num = -1234;``    ` `        ``if` `(checkJumbled(num))``            ``Console.WriteLine(``"True "``);``        ``else``            ``Console.WriteLine(``"False "``);``    ` `        ``// 287 to be checked``        ``num = -1247;``    ` `        ``if` `(checkJumbled(num))``            ``Console.WriteLine(``"True"``);``                ` `        ``else``            ``Console.WriteLine(``"False"``);``            ` `    ``}``}` `// This code is contributed by Nitin Mittal.`

PHP

 ` 1)``            ``return` `false;` `        ``\$num` `= ``\$num` `/ 10;``    ``}` `    ``// Number checked``    ``return` `true;``}` `// Driver code` `//-1234 to be checked``\$num` `= -1234;` `if` `(checkJumbled(``\$num``))``    ``echo` `"True \n"``;``else``    ``echo` `"False \n"``;` `// 287 to be checked``\$num` `= -1247;` `if` `(checkJumbled(``\$num``))``    ``echo` `"True \n"``;``else``    ``echo` `"False \n"``;` `// This code is contributed by ajit``?>`

Javascript

 ``

Output :

```True
False```

Related Article :
Stepping Numbers
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