Question

How to write your own parseInt() method in Java

Answer 1

package javaapplication1;

import java.io.IOException;

public class JavaApplication1 {

    public static int myParseInt(String s) {
        int result = 0;
        for (int i = 0; i < s.length(); i++) {
            result = 10 * result + (s.charAt(i) - 48);
        }
        return result;
    }

    public static void main(String[] args) throws IOException {

        String s = "13";
        
        int n = myParseInt(s);
        
        System.out.println(n);
    }
}


/*
                   
run:

13
          
 */

 

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