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Check if a number is a Pangram or not
  • Last Updated : 08 Apr, 2021
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Given an integer N, the task is to check whether the given number is a pangram or not. 
Note: A Pangram Number contains every digit [0- 9] at least once.

Examples:

Input : N = 10239876540022
Output : Yes
Explanation: N contains all the digits from 0 to 9. Therefore, it is a pangram.

Input : N = 234567890
Output : No
Explanation: N doesn’t contain the digit 1. Therefore, it is not a pangram.

 

Set-based Approach: The idea is to use Sets to store the count of distinct digits present in N. Follow the steps below to solve the problem:

Below is the implementation of the above approach:



Java




// Java implementation of above approach
import java.math.BigInteger;
import java.util.HashSet;
 
class GFG{
     
// Function to check if N
// is a Pangram or not
static String numberPangram(BigInteger N)
{
     
    // Stores equivalent string
    // representation of N
    String num = N.toString();
 
    // Convert the string to Character array
    char[] arrNum = num.toCharArray();
 
    // Add all characters pf arrNum to set
    HashSet<Character> setNum = new HashSet<Character>();
 
    for(char ch : arrNum)
    {
        setNum.add(ch);
    }
     
    // If the length of set is 10
    // The number is a Pangram
    if (setNum.size() == 10)
        return "True";
    else
        return "False";
}
 
// Driver code
public static void main(String[] args)
{
    BigInteger N = new BigInteger("10239876540022");
    System.out.print(numberPangram(N));
}
}
 
// This code is contributed by abhinavjain194

Python3




# Python3 implementation of above approach
 
# Function to check if N
# is a Pangram or not
def numberPangram(N):
   
    # Stores equivalent string
    # representation of N
    num = str(N)
     
    # Convert the string to set
    setnum = set(num)
     
    # If the length of set is 10
    if(len(setnum) == 10):
       
          # The number is a Pangram
        return True
    else:
        return False
 
 
# Driver Code
 
N = 10239876540022
print(numberPangram(N))
Output: 
True

 

Time Complexity: O(log10N * log(log10N))
Auxiliary Space: O(1)

Hashing-based Approach: Follow the steps to solve the problem:

Below is the implementation of the above approach:

Python3




# Python implementation of above approach
 
from collections import Counter
 
# Function to check if
# N is a Pangram or not
def numberPangram(N):
   
    # Stores equivalent string
    # representation of N
    num = str(N)
     
    # Count frequencies of
    # digits present in N
    frequency = Counter(num)
     
    # If the length of the
    # dictionary frequency is 10
    if(len(frequency) == 10):
       
          # The number is a Pangram
        return True
    else:
        return False
 
 
# Driver Code
 
N =10239876540022
print(numberPangram(N))
Output: 
True

 

Time Complexity: O(log10N * log(log10N))
Auxiliary Space: O(1)

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