Question

How to reverse an integer number in Java

Answer 1

public class MyClass {
    public static void main(String args[]) {
	    int num = 893651;   
	    int is_positive = 1;
	    
        if (num < 0) {
            is_positive = -1;
            num = num * -1;
        }
        
        int reverse = 0;
        while (num > 0) {
            int remainder = num % 10;
            reverse = reverse * 10 + remainder;
            num /= 10;
        }
        
        if (is_positive == -1)
            reverse = reverse * -1;
        
        System.out.println(reverse);
    }
}




/*
run:

156398

*/

 

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