Question

How to replace one specific digit in a number with other specific digit in Java

Answer 1

public class MyClass {
    static int replace_digit_in_number(int number, int d1, int d2) { 
        int result = 0, multiply = 1; 
       
        while (number != 0) { 
            int reminder = number % 10; 
             
            if (reminder == d1)  
                result += d2 * multiply;  
               
            else
                result += reminder * multiply;      
 
            multiply *= 10; 
            number = number / 10; 
        } 
        return result; 
    } 
    public static void main(String args[]) {
        int number = 18803808; 
 
        System.out.println(replace_digit_in_number(number, 8, 7)); 
    }
}
 
 
 
/*
run:
 
17703707
 
*/

 

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