Springboard-Infosys/reverseNum.java at main · asifalinissar/Springboard-Infosys · GitHub

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// Create a class ReverseCalculator and implement the logic to reverse a number
// i.e., if the input is provided as 27, then the output should be displayed as 72,
// using appropriate control structures.

public class reverseNum {


	// method using while loop

	public int calcuReverse(int num) {

		int reverse = 0;


		while(num > 0) {

			reverse = reverse*10 + num % 10;

			 num /= 10;
		}
		return reverse;
	}

	// method using for loop

	public int forReverse(int num) {

		int reverse = 0;

		for(; num>0; num /= 10) {
			reverse = reverse *10 + num% 10;
		}
		return reverse;
	}

	// method using while loop

	public int whileReverse(int num) {

		int reverse = 0;


		if( num == 0) {
			return reverse;
		}


		do {

			reverse = reverse*10 + num%10;

			num /= 10;

		}while(num < 0);

		return reverse;

	}

	public static void main(String [] args) {
		reverseNum rNum = new reverseNum();
		System.out.println(rNum.calcuReverse(27));

		System.out.println(rNum.forReverse(56));

		System.out.println(rNum.forReverse(89));

	}

}