MPZ

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ZAD 12
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String.prototype.escapeDiacritics = function()
{
    return this.replace(/ą/g, 'a').replace(/Ą/g, 'A')
        .replace(/ć/g, 'c').replace(/Ć/g, 'C')
        .replace(/ę/g, 'e').replace(/Ę/g, 'E')
        .replace(/ł/g, 'l').replace(/Ł/g, 'L')
        .replace(/ń/g, 'n').replace(/Ń/g, 'N')
        .replace(/ó/g, 'o').replace(/Ó/g, 'O')
        .replace(/ś/g, 's').replace(/Ś/g, 'S')
        .replace(/ż/g, 'z').replace(/Ż/g, 'Z')
        .replace(/ź/g, 'z').replace(/Ź/g, 'Z');
}
// przykładowe wykorzystanie:
var test = new String("ąźĘŹĆŚół");
alert(test.escapeDiacritics());

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ZAD 5
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String tekst = "kajak";
// Poniższe polecenie wyświetli liczbę: 5
System.out.println(tekst.length());


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ZAD 7
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String szyfr(String str)
{
char x[ ] = str.toCharArray( );

for( int i=0 ; i!=x.length ; i++)
{
int n = x[i];
n+=3;
x[i]=(char)n;
}
return new String(x);
}




rot


public class Rot13 {

    public static void main(String[] args) {
        String s = args[0];
        for (int i = 0; i < s.length(); i++) {
            char c = s.charAt(i);
            if       (c >= 'a' && c <= 'm') c += 13;
            else if  (c >= 'A' && c <= 'M') c += 13;
            else if  (c >= 'n' && c <= 'z') c -= 13;
            else if  (c >= 'N' && c <= 'Z') c -= 13;
            System.out.print(c);
        }
        System.out.println();
    }

}