text: public virtual int Stem(char[] s, int len){if (len < 4){return len;}for (int i = 0; i < len; i++){switch (s[i]){case 'ä':case 'å':s[i] = 'a';break;case 'ö':s[i] = 'o';break;}}len = Step1(s, len);len = Step2(s, len);len = Step3(s, len);len = Norm1(s, len);len = Norm2(s, len);return len;}