#123 solved

Factorial.java

@@ -1,8 +1,10 @@
+// Java program to find factorial of a number
 import java.util.Scanner;
 
-public class Factorial{
+public class Factorial
+{
   public static void main(String[] args){
-    Scanner sc=new Scanner(System.in);
+    Scanner sc = new Scanner(System.in);
     int n=sc.nextInt();
     System.out.println(factorial(n));
   }

armstrong.py

@@ -0,0 +1,20 @@
+# Python program to check if the number is an Armstrong number or not
+
+# take input from the user
+num = int(input("Enter a number: "))
+
+# initialize sum
+sum = 0
+
+# find the sum of the cube of each digit
+temp = num
+while temp > 0:
+   digit = temp % 10
+   sum += digit ** 3
+   temp //= 10
+
+# display the result
+if num == sum:
+   print(num,"is an Armstrong number")
+else:
+   print(num,"is not an Armstrong number")

digit.c

@@ -0,0 +1,16 @@
+#include <stdio.h>  
+int main()  
+{  
+   int n;  // variable declaration  
+   int count=0;   // variable declaration  
+   printf("Enter a number");  
+   scanf("%d",&n);  
+   while(n!=0)  
+   {  
+       n=n/10;  
+       count++;  
+   }  
+
+   printf("\nThe number of digits in an integer is : %d",count);  
+    return 0;  
+}  

palindrome.java

@@ -0,0 +1,22 @@
+//JAVA program to check palindrome number
+public class Palindrome
+{  
+  public static void main(String args[])
+  {  
+
+    int r,sum=0,temp;    
+    int n=454;//It is the number variable to be checked for palindrome  
+
+    temp=n;    
+    while( n>0 )
+    {    
+      r=n%10;  //getting remainder  
+      sum=(sum*10)+r;    
+      n=n/10;    
+    }    
+    if(temp==sum)    
+    System.out.println("palindrome number ");    
+    else    
+    System.out.println("not palindrome");    
+  }  
+}