Check if a number is jumbled or not

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

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

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 <bits/stdc++.h> 
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

<?php 
// PHP code to check if a 
// number is jumbled or not 
  
// Function to check if a  
// number is jumbled or not 
function 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($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 
?> 

Output :

True
False

Related Article :
Stepping Numbers

This article is contributed by Rohit Thapliyal. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.

My Personal Notes

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

C++

Java

Python

C#

PHP

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