Tech Number in JAVA

Tech Number

Tech Number : A Tech Number has even number of digits. If the number is split into two equal halves. then the square of the sum of these halves is equal to the number itself.

Example:

Input                  : 3025

Total Digits       : 4

1^st Half              : 30

2^nd Half             : 25

Sum                   : 30 + 25 = 55

Square               : 55 X 55 = 3025

Output               : It is a Tech Number

Input                  : 2025

Total Digits       : 4

1^st Half              : 20

2^nd Half             : 25

Sum                   : 20 + 25 = 45

Square               : 45 X 45 = 2025

Output               : It is a Tech Number

Input                  : 104

Total Digits       : 3

Output               : It is not a Tech Number

Algorithm and Program given below :-

Algorithm :-

• Input number as a string
• Store the length of the string in a variable
• Convert the input number as Integer
• Check if the digits are even or not
• If digits are not even Print “It is not a Tech Number”
• If the digits are even then
• Divide the length by two
• Store two halves in two String Variable
• Now convert the two String variables into Integer Variables
• Calculate the sum of two halves
• Store the square of the sum of two halves
• Compare the square with the original number
• If it is equal Print “It is a Tech Number”
• Otherwise Print “ It is not a Tech Number”
• Compile and Run the Program
  
  

  Program :-

  import java.io.*;
  import java.util.*;
  class Tech_Number
  {
      public static void main(String args[])
      {
          Scanner in = new Scanner(System.in);
          int n,l,a,b,sum,sq,div;
          String str,str1,str2;
          System.out.println("Enter Number");
          str= in.nextLine();//input number as a string
          l=str.length();//calculating length of string
          n= Integer.parseInt(str);//converting input number as integer
          if(l%2==0)
          {
              div= l/2;
              str1= str.substring(0,div);//storing 1st half as string
              str2= str.substring(div,l);//storing 2nd half as string
              a= Integer.parseInt(str1);//converting 1st half into integer
              b= Integer.parseInt(str2);//converting 2nd half into integer
              sum= a+b; //sum of the two halves
              sq= sum*sum; // square of sum of two halves
              if(n==sq)
              {
                  System.out.println("It is a Tech Number : "+n);
              }
              else
              {
                  System.out.println("It is not a Tech Number : "+n);
              }
          }
          else
          {
              System.out.println("It is not a Tech Number : "+n);
          }
      }// end of main method
  }// end of class 
  
  
    To Understand the Program in detail Watch the video :-
•  
  
  Video Link of this Program : https://youtu.be/JbEC8NtLyoY
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