text: public 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;}