package specialNumbers;

/**

* @author Anish

*

*

*/

public class TechNumber {

/* Tech Number is a number which has an even number of digits,

* and when the number of digits split into two halves

* then the square of the sum of those halves is equal to the original number

* for example 2025

* Number of digits = 4 (even)

* Split 2025 into two halves, then

* first half = 20 second half = 25

* sum of the halves = 20+25 = 45

* square of the sum of the halves = 45*45 = 2025

*/

public static void techNumber(int num) { // Sttaic Method

int totalDigit, firstHalf, secondHalf,sum=0;

totalDigit = DisariumNumber.countDigit(num); // calls a static Method in DisariumNumber class to count digits

if(totalDigit%2 != 0) // check Number of digit is even or NOT

System.out.println(" Total Number of Digits is not EVEN");

firstHalf = num / (int)Math.pow(10, totalDigit/2); // gets the first half of number

secondHalf = num % (int)Math.pow(10, totalDigit/2); // gets the second half of number

sum = firstHalf + secondHalf; // gets sum of both halves of number

if((sum*sum) == num) // check whether square of sum of both halves of number is same as number

System.out.println(">> "+ num +" is Tech Number"); // IF YES prints Tech Number

else

System.out.println(">> "+ num +" is NOT Tech Number"); // IF NO prints NOT Tech Number

}

// MAIN METHOD

public static void main(String[] args) {

// Input is another public class having getNumber STATIC Method and a return type of INTEGER

System.out.println(" Find A Number is Tech Number or NOT");

int num = Input.getNumber(); // gets the NUM

techNumber(num); // Static method to check number is Tech Number or NOT

}

}