我的程序没有打印没有'g'和/或'n'的字符串。 为什么会这样呢？

Question

Here is my code:

public class test
{
    public static void main(String y)
    {
        int l =y.length();
        for(int i=0;i<=l-1;i++)
        {
            if(y.charAt(i)!='g'||y.charAt(i)!='n')
        System.out.print(y.charAt(i));
        else
        continue;
    }}
}

I think && would work. Or operator checks if only one statement is true. Therefore, result will always be true and the input string would be same to output string.

Answer 1

The problem is that you used OR (||) insted of AND (&&)

This code will always return true:

(y.charAt(i)!='g' || y.charAt(i)!='n') 

Try this instead:

    public class test 
    { 
        public static void main(String y) 
        { 
            int l =y.length(); 
            for(int i=0;i<=l-1;i++) 
            { 
                if(y.charAt(i)!='g' && y.charAt(i)!='n') 
                    System.out.print(y.charAt(i)); 
                else continue; 
            }
        } 
    }

Answer 2

Try this:

public class test
{
    public static void main(String y)
    {
        int l =y.length();
        for(int i=0;i<=l-1;i++)
        {
            if( y.charAt(i) == 'g'|| y.charAt(i) == 'n'){
                continue;
            } else {
                System.out.print(y.charAt(i));
            }
        }
    }

}